RSS (originally RDF Site Summary; later, two competing approaches emerged, which used the backronyms Rich Site Summary and Really Simple Syndication respectively) is a type of web feed which allows users and applications to access updates to online content in a standardized, computer-readable format. These feeds can, for example, allow a user to keep track of many different websites in a single news aggregator. The news aggregator will automatically check the RSS feed for new content, allowing the content to be automatically passed from website to website or from website to user. This passing of content is called web syndication. Websites usually use RSS feeds to publish frequently updated information, such as blog entries, news headlines, or episodes of audio and video series. RSS is also used to distribute podcasts. An RSS document (called "feed", "web feed", or "channel") includes full or summarized text, and metadata, like publishing date and author's name.
A standard XML file format ensures compatibility with many different machines/programs. RSS feeds also benefit users who want to receive timely updates from favourite websites or to aggregate data from many sites.
Subscribing to a website RSS removes the need for the user to manually check the website for new content. Instead, their browser constantly monitors the site and informs the user of any updates. The browser can also be commanded to automatically download the new data for the user.
RSS feed data is presented to users using software called a news aggregator. This aggregator can be built into a website, installed on a desktop computer, or installed on a mobile device. Users subscribe to feeds either by entering a feed's URI into the reader or by clicking on the browser's feed icon. The RSS reader checks the user's feeds regularly for new information and can automatically download it, if that function is enabled. The reader also provides a user interface.
|RSS – Rich Site Summary|
|Internet media type|
|Type of format||Web syndication|
The RSS formats were preceded by several attempts at web syndication that did not achieve widespread popularity. The basic idea of restructuring information about websites goes back to as early as 1995, when Ramanathan V. Guha and others in Apple Computer's Advanced Technology Group developed the Meta Content Framework.
RDF Site Summary, the first version of RSS, was created by Dan Libby and Ramanathan V. Guha at Netscape. It was released in March 1999 for use on the My.Netscape.Com portal. This version became known as RSS 0.9. In July 1999, Dan Libby of Netscape produced a new version, RSS 0.91, which simplified the format by removing RDF elements and incorporating elements from Dave Winer's news syndication format. Libby also renamed the format from RDF to RSS Rich Site Summary and outlined further development of the format in a "futures document".
This would be Netscape's last participation in RSS development for eight years. As RSS was being embraced by web publishers who wanted their feeds to be used on My.Netscape.Com and other early RSS portals, Netscape dropped RSS support from My.Netscape.Com in April 2001 during new owner AOL's restructuring of the company, also removing documentation and tools that supported the format.
Two parties emerged to fill the void, with neither Netscape's help nor approval: The RSS-DEV Working Group and Dave Winer, whose UserLand Software had published some of the first publishing tools outside Netscape that could read and write RSS.
Winer published a modified version of the RSS 0.91 specification on the UserLand website, covering how it was being used in his company's products, and claimed copyright to the document. A few months later, UserLand filed a U.S. trademark registration for RSS, but failed to respond to a USPTO trademark examiner's request and the request was rejected in December 2001.
The RSS-DEV Working Group, a project whose members included Guha and representatives of O'Reilly Media and Moreover, produced RSS 1.0 in December 2000. This new version, which reclaimed the name RDF Site Summary from RSS 0.9, reintroduced support for RDF and added XML namespaces support, adopting elements from standard metadata vocabularies such as Dublin Core.
In December 2000, Winer released RSS 0.92 a minor set of changes aside from the introduction of the enclosure element, which permitted audio files to be carried in RSS feeds and helped spark podcasting. He also released drafts of RSS 0.93 and RSS 0.94 that were subsequently withdrawn.
In September 2002, Winer released a major new version of the format, RSS 2.0, that redubbed its initials Really Simple Syndication. RSS 2.0 removed the type attribute added in the RSS 0.94 draft and added support for namespaces. To preserve backward compatibility with RSS 0.92, namespace support applies only to other content included within an RSS 2.0 feed, not the RSS 2.0 elements themselves. (Although other standards such as Atom attempt to correct this limitation, RSS feeds are not aggregated with other content often enough to shift the popularity from RSS to other formats having full namespace support.)
Because neither Winer nor the RSS-DEV Working Group had Netscape's involvement, they could not make an official claim on the RSS name or format. This has fueled ongoing controversy in the syndication development community as to which entity was the proper publisher of RSS.
One product of that contentious debate was the creation of an alternative syndication format, Atom, that began in June 2003. The Atom syndication format, whose creation was in part motivated by a desire to get a clean start free of the issues surrounding RSS, has been adopted as IETF Proposed Standard RFC 4287.
In July 2003, Winer and UserLand Software assigned the copyright of the RSS 2.0 specification to Harvard's Berkman Center for Internet & Society, where he had just begun a term as a visiting fellow. At the same time, Winer launched the RSS Advisory Board with Brent Simmons and Jon Udell, a group whose purpose was to maintain and publish the specification and answer questions about the format.
In December 2005, the Microsoft Internet Explorer team and Microsoft Outlook team announced on their blogs that they were adopting Firefox's RSS icon. In February 2006, Opera Software followed suit. This effectively made the orange square with white radio waves the industry standard for RSS and Atom feeds, replacing the large variety of icons and text that had been used previously to identify syndication data.
In January 2006, Rogers Cadenhead relaunched the RSS Advisory Board without Dave Winer's participation, with a stated desire to continue the development of the RSS format and resolve ambiguities. In June 2007, the board revised their version of the specification to confirm that namespaces may extend core elements with namespace attributes, as Microsoft has done in Internet Explorer 7. According to their view, a difference of interpretation left publishers unsure of whether this was permitted or forbidden.
RSS is XML-formatted plain text. The RSS format itself is relatively easy to read both by automated processes and by humans alike. An example feed could have contents such as the following:
<?xml version="1.0" encoding="UTF-8" ?> <rss version="2.0"> <channel> <title>RSS Title</title> <description>This is an example of an RSS feed</description> <link>http://www.example.com/main.html</link> <lastBuildDate>Mon, 06 Sep 2010 00:01:00 +0000 </lastBuildDate> <pubDate>Sun, 06 Sep 2009 16:20:00 +0000</pubDate> <ttl>1800</ttl> <item> <title>Example entry</title> <description>Here is some text containing an interesting description.</description> <link>http://www.example.com/blog/post/1</link> <guid isPermaLink="false">7bd204c6-1655-4c27-aeee-53f933c5395f</guid> <pubDate>Sun, 06 Sep 2009 16:20:00 +0000</pubDate> </item> </channel> </rss>
When retrieved, reading software could use the XML structure to present a neat display to the end users.
There are several different versions of RSS, falling into two major branches (RDF and 2.*).
The RDF (or RSS 1.*) branch includes the following versions:
The RSS 2.* branch (initially UserLand, now Harvard) includes the following versions:
Later versions in each branch are backward-compatible with earlier versions (aside from non-conformant RDF syntax in 0.90), and both versions include properly documented extension mechanisms using XML Namespaces, either directly (in the 2.* branch) or through RDF (in the 1.* branch). Most syndication software supports both branches. "The Myth of RSS Compatibility", an article written in 2004 by RSS critic and Atom advocate Mark Pilgrim, discusses RSS version compatibility issues in more detail.
The extension mechanisms make it possible for each branch to copy innovations in the other. For example, the RSS 2.* branch was the first to support enclosures, making it the current leading choice for podcasting, and as of 2005 is the format supported for that use by iTunes and other podcasting software; however, an enclosure extension is now available for the RSS 1.* branch, mod_enclosure. Likewise, the RSS 2.* core specification does not support providing full-text in addition to a synopsis, but the RSS 1.* markup can be (and often is) used as an extension. There are also several common outside extension packages available, e.g. one from Microsoft for use in Internet Explorer 7.
The most serious compatibility problem is with HTML markup. Userland's RSS reader—generally considered as the reference implementation—did not originally filter out HTML markup from feeds. As a result, publishers began placing HTML markup into the titles and descriptions of items in their RSS feeds. This behavior has become expected of readers, to the point of becoming a de facto standard, though there is still some inconsistency in how software handles this markup, particularly in titles. The RSS 2.0 specification was later updated to include examples of entity-encoded HTML; however, all prior plain text usages remain valid.
As of January 2007, tracking data from www.syndic8.com indicates that the three main versions of RSS in current use are 0.91, 1.0, and 2.0, constituting 13%, 17%, and 67% of worldwide RSS usage, respectively. These figures, however, do not include usage of the rival web feed format Atom. As of August 2008, the syndic8.com website is indexing 546,069 total feeds, of which 86,496 (16%) were some dialect of Atom and 438,102 were some dialect of RSS.
The primary objective of all RSS modules is to extend the basic XML schema established for more robust syndication of content. This inherently allows for more diverse, yet standardized, transactions without modifying the core RSS specification.
To accomplish this extension, a tightly controlled vocabulary (in the RSS world, "module"; in the XML world, "schema") is declared through an XML namespace to give names to concepts and relationships between those concepts.
Some RSS 2.0 modules with established namespaces are:
Although the number of items in an RSS channel is theoretically unlimited, some news aggregators do not support RSS files larger than 150KB. For example, applications that rely on the Common Feed List of Windows might handle such files as if they were corrupt, and not open them. Interoperability can be maximized by keeping the file size under this limit.
Podcasts are distributed using RSS. To listen to a podcast, a user adds the RSS feed to their podcast client, and the client can then list available episodes and download or stream them for listening or viewing. To be included in a podcast directory the feed must for each episode provide a title, description, artwork, category, language, and explicit rating.
Some services deliver RSS to an email inbox, sending updates from user's personal selection and schedules. Conversely, some services deliver email to RSS readers. Examples of those services include Blogtrottr, IFTTT and Zapier.
Both RSS and Atom are widely supported and are compatible with all major consumer feed readers. RSS gained wider use because of early feed reader support. Technically, Atom has several advantages: less restrictive licensing, IANA-registered MIME type, XML namespace, URI support, Relax NG support.
The following table shows RSS elements alongside Atom elements where they are equivalent.
Note: the asterisk character (*) indicates that an element must be provided (Atom elements "author" and "link" are only required under certain conditions).
|RSS 2.0||Atom 1.0|
Several major sites such as Facebook and Twitter previously offered RSS feeds but have reduced or removed support. Additionally, widely used readers such as Shiira, FeedDemon, and Google Reader have been discontinued having cited declining popularity in RSS. RSS support was removed in OS X Mountain Lion's versions of Mail and Safari, although the features were partially restored in Safari 8. Mozilla removed RSS support from Mozilla Firefox version 64.0, joining Google Chrome and Microsoft Edge which do not include RSS support, thus leaves Internet Explorer the last major browser to include RSS support by default.
The conflict centers on something called Really Simple Syndication (RSS), a technology widely used to syndicate blogs and other Web content. The dispute pits Harvard Law School fellow Dave Winer, the blogging pioneer who is the key gatekeeper of RSS, against advocates of a different format.
1993 bombing of RSS office in Chennai refers to the bombing of head office of the Rashtriya Swayamsevak Sangh in Chennai in Tamil Nadu on 8 August 1993. The bombings left eleven people dead and seven others injured.
The special CBI court tried eighteen of the accused under the now-defunct Terrorist and Disruptive Activities (Prevention) Act. They had been earlier given life imprisonment by a TADA court in Chennai for their involvement in the blast on 6 August 1993 at the RSS office in Chennai. The CBI has announced a reward of Rs.10 lakh for providing credible information about Mustaq Ahmed one of the main accused in the blast.Aggregator
Aggregator may refer to:
News aggregator, software or a website that aggregates news from various sources
Poll aggregator, a website that aggregates polling data to gauge public sentiment on key political issues or to measure likely support for a candidate or party in an upcoming election. See the following examples:
Politicrunch, a poll aggregator
Review aggregator, a website that aggregates reviews of movies or other products or services
Search aggregator, software that aggregates search results from various search engines
Social network aggregation, the collection of content from multiple social network services
Video aggregator, a website that aggregates online videos from various sources
Job ads aggregator, a website that aggregates job ads from various job boards, multiposter sites, as well as from direct employers and recruiting agenciesAtom (Web standard)
The name Atom applies to a pair of related Web standards. The Atom Syndication Format is an XML language used for web feeds, while the Atom Publishing Protocol (AtomPub or APP) is a simple HTTP-based protocol for creating and updating web resources.Web feeds allow software programs to check for updates published on a website. To provide a web feed, the site owner may use specialized software (such as a content management system) that publishes a list (or "feed") of recent articles or content in a standardized, machine-readable format. The feed can then be downloaded by programs that use it, like websites that syndicate content from the feed, or by feed reader programs that allow internet users to subscribe to feeds and view their content.
A feed contains entries, which may be headlines, full-text articles, excerpts, summaries or links to content on a website along with various metadata.
The Atom format was developed as an alternative to RSS. Ben Trott, an advocate of the new format that became Atom, believed that RSS had limitations and flaws—such as lack of on-going innovation and its necessity to remain backward compatible—and that there were advantages to a fresh design.Proponents of the new format formed the IETF Atom Publishing Format and Protocol Workgroup. The Atom syndication format was published as an IETF proposed standard in RFC 4287 (December 2005), and the Atom Publishing Protocol was published as RFC 5023 (October 2007).Bharatiya Jana Sangh
The Bharatiya Jana Sangh (abbrv. BJS, short name: Jan Sangh, full name: Akhil Bharatiya Jana Sangh) was an Indian right wing political party that existed from 1951 to 1977 and was the political arm of Rashtriya Swayamsevak Sangh (RSS), a Hindu nationalist volunteer organisation. In 1977, it merged with several other left, centre and right parties opposed to the Indian National Congress and formed the Janata Party. After the Janata Party split in 1980, the former Jan Sangh was recreated as the Bharatiya Janata Party (BJP), which is currently India's largest political party by primary membership and representation in the Lok Sabha.Broadcatching
Broadcatching is the downloading of digital content that has been made available over the Internet using RSS.
The general idea is to use an automated mechanism to aggregate various web feeds and download content for viewing or presentation purposes.Comparison of feed aggregators
The following is a comparison of RSS feed aggregators. Often e-mail programs and web browsers have the ability to display RSS feeds. They are listed here, too.
Many BitTorrent clients support RSS feeds for broadcatching (see Comparison of BitTorrent clients).
With the rise of Cloud computing, some cloud based services offer feed aggregation. They are listed here as well.Hindutva
Hindutva ("Hinduness") is the predominant form of Hindu nationalism in India. The term was popularised by Vinayak Damodar Savarkar in 1923. It is championed by the Hindu nationalist volunteer organisation Rashtriya Swayamsevak Sangh (RSS), Vishva Hindu Parishad (VHP) and Hindu Sena. The Hindutva movement has been described as "almost fascist in the classical sense", adhering to a disputed concept of homogenised majority and cultural hegemony. Some dispute the fascist label, and suggest Hindutva has been a form of "conservatism" or "ethnic absolutism".K. B. Hedgewar
Keshav Baliram Hedgewar (1 April 1889 – 21 June 1940), also known as "Doctorji" within his organisation, was the founding Sarsanghachalak (or "Supreme Leader") of the Rashtriya Swayamsevak Sangh (RSS). Hedgewar founded the RSS in Nagpur in 1925, with the intention of promoting the concept of a united India rooted in Hinduism ideology.M. S. Golwalkar
Madhav Sadashiv Golwalkar (Marathi: मा. स. गोळवलकर; 19 February 1906 – 5 June 1973) was the second Sarsanghchalak (or, "Supreme Leader") of the Rashtriya Swayamsevak Sangh. Golwalkar authored the books Bunch of Thoughts and We, or Our Nationhood Defined.Media RSS
Media RSS (MRSS) is an RSS extension that adds several enhancements to RSS enclosures, and is used for syndicating multimedia files (audio, video, image) in RSS feeds. It was originally designed by Yahoo! and the Media RSS community in 2004, but in 2009 its development has been moved to the RSS Advisory Board. One example of enhancements is specification of thumbnails for each media enclosure, and the possibility to enclose multiple versions of the same content (e.g. different file formats).
The format can be used for podcasting, which uses the RSS format as a means of delivering content to media-playing devices, as well as Smart TVs. Media RSS allows for a much more detailed description of the content to be delivered to the subscriber than the RSS standard. The standard is also used by content publishers to feed media files into Yahoo! Video Search, which is a feature of Yahoo! Search that allows users to search for video files.Nathuram Godse
Nathuram Vinayak Godse (19 May 1910 – 15 November 1949) was a right-wing advocate of Hindu nationalism who assassinated Mahatma Gandhi in New Delhi on 30 January 1948. He shot Gandhi in the chest three times at point-blank range. Godse was a member of the right-wing, Hindu nationalist organisation Rashtriya Swayamsevak Sangh (RSS); he believed that Gandhi favoured the political demands of India's Muslims during the partition of India.
He plotted the assassination with Narayan Apte and six others. After a trial that lasted more than a year, Godse was sentenced to death on 8 November 1949. Although pleas for commutation were made by Gandhi's two sons, Manilal Gandhi and Ramdas Gandhi, they were turned down by India's prime minister Jawaharlal Nehru, deputy prime minister Vallabhbhai Patel, and the Governor-General C. Rajagopalachari. Godse was hanged at Ambala Central Jail on 15 November 1949.News aggregator
In computing, a news aggregator, also termed a feed aggregator, feed reader, news reader, RSS reader or simply aggregator, is client software or a web application which aggregates syndicated web content such as online newspapers, blogs, podcasts, and video blogs (vlogs) in one location for easy viewing. RSS is a synchronized subscription system. RSS uses extensible markup language (XML) to structure pieces of information to be aggregated in a feed reader that displays the information in a user-friendly interface. The updates distributed may include journal tables of contents, podcasts, videos, and news items.RSS enclosure
RSS enclosures are a way of attaching multimedia content to RSS feeds by providing the URL of a file associated with an entry, such as an MP3 file to a music recommendation or a photo to a diary entry. Unlike e-mail attachments, enclosures are merely hyperlinks to files. The actual file data is not embedded into the feed (unless a data URL is used). Support and implementation among aggregators varies: if the software understands the specified file format, it may automatically download and display the content, otherwise provide a link to it or silently ignore it.
The addition of enclosures to RSS, as first implemented by Dave Winer in late 2000 , was an important prerequisite for the emergence of podcasting, perhaps the most common use of the feature as of 2012. In podcasts and related technologies enclosures are not merely attachments to entries, but provide the main content of a feed.Rashtriya Swayamsevak Sangh
Rashtriya Swayamsevak Sangh, abbreviated as RSS (Rāṣṭrīya Svayamsēvaka Saṅgha, IPA: [rɑːʂˈʈriːj(ə) swəjəmˈseːvək ˈsəŋɡʱ], lit. "National Volunteer Organisation" or "National Patriotic Organisation"), is an Indian right-wing, Hindu nationalist, paramilitary volunteer organisation that is widely regarded as the parent organisation of the ruling party of India, the Bharatiya Janata Party. The RSS is one of the principal organizations of the Sangh Parivar group. Founded on 27 September 1925, it claimed a commitment to selfless service to India. It is the world's largest voluntary inspiring missionary organization.The initial impetus was to provide character training through Hindu discipline and to unite the Hindu community to form a Hindu Rashtra (Hindu nation). The organisation promotes the ideals of upholding Indian culture and the values of a civil society and spreads the ideology of Hindutva, to "strengthen" the Hindu community. It drew initial inspiration from European right-wing groups during World War II. Gradually, RSS grew into a prominent Hindu nationalist umbrella organisation, spawning several affiliated organisations that established numerous schools, charities, and clubs to spread its ideological beliefs.The RSS was banned once during British rule, and then thrice by the post-independence Indian government – first in 1948 when a former RSS member assassinated Mahatma Gandhi; then during the emergency (1975–77); and for a third time after the demolition of Babri Masjid in 1992.Republic of Singapore Navy
The Republic of Singapore Navy (RSN) is the naval component of the Singapore Armed Forces (SAF), responsible for the defence of Singapore against sea-borne threats and protection of its sea lines of communications. Operating within the crowded littoral waters of the Singapore Strait, the Singapore Navy is regarded as one of the best in the region and works closely with the Royal Malaysian Navy and the Indonesian Navy to combat piracy surrounding their coasts.All commissioned ships of the RSN have the prefix RSS standing for (Republic of Singapore Ship).Sangh Parivar
The Sangh Parivar (Family of Organisations) refers to the family of Hindu nationalist organisations which have been started by members of the Rashtriya Swayamsevak Sangh (RSS) or drew inspiration from its ideology. The Sangh Parivar represents the Hindu nationalist movement. It includes the RSS and several dozen affiliated organisations, whose members' expressed opinions have been diverse over a range of topics. Nominally, the different organisations within the Sangh Parivar run independently and have different policies and activities.Web directory
A web directory or link directory is an online list or catalog of websites. That is, it is a directory on the World Wide Web of (all or part of) the World Wide Web. Historically, directories typically listed entries on people or businesses, and their contact information; such directories are still in use today. A web directory includes entries about websites, including links to those websites, organized into categories and subcategories. Besides a link, each entry may include the title of the website, and a description of its contents. In most web directories, the entries are about whole websites, rather than individual pages within them (called "deep links"). Websites are often limited to inclusion in only a few categories.
There are two ways to find information on the Web: by searching or browsing. Web directories provide links in a structured list to make browsing easier. Many web directories combine searching and browsing by providing a search engine to search the directory. Unlike search engines, which base results on a database of entries gathered automatically by web crawler, most web directories are built manually by human editors. Many web directories allow site owners to submit their site for inclusion, and have editors review submissions for fitness.
Web directories may be general in scope, or limited to particular subjects or fields. Entries may be listed for free, or by paid submission (meaning the site owner must pay to have his or her website listed).
RSS directories are similar to web directories, but contain collections of RSS feeds, instead of links to web sites.Web feed
On the World Wide Web, a web feed (or news feed) is a data format used for providing users with frequently updated content. Content distributors syndicate a web feed, thereby allowing users to subscribe a channel to it. Making a collection of web feeds accessible in one spot is known as aggregation, which is performed by a news aggregator. A web feed is also sometimes referred to as a syndicated feed.
A typical scenario of web-feed use might involve the following: a content provider publishes a feed link on its site which end users can register with an aggregator program (also called a feed reader or a news reader) running on their own machines; doing this is usually as simple as dragging the link from the web browser to the aggregator. When instructed, the aggregator asks all the servers in its feed list if they have new content; if so, the aggregator either makes a note of the new content or downloads it. One can schedule aggregators to check for new content periodically.
Web feeds exemplify pull technology, although they may appear to push content to the user.
The kinds of content delivered by a web feed are typically HTML (webpage content) or links to webpages and other kinds of digital media. Often when websites provide web feeds to notify users of content updates, they only include summaries in the web feed rather than the full content itself.
Many news websites, weblogs, schools, and podcasters operate web feeds.
Web feeds have some advantages compared to receiving frequently published content via an email:
Users do not disclose their email address when subscribing to a feed and so are not increasing their exposure to threats associated with email: spam, viruses, phishing, and identity theft.
Users do not have to send an unsubscribe request to stop receiving news. They simply remove the feed from their aggregator.
The feed items are automatically sorted in that each feed URL has its own sets of entries (unlike an email box where messages must be sorted by user-defined rules and pattern matching).In its explanation "What is a web feed?", the publishing group of Nature describes two benefits of web feeds:
It makes it easier for users to keep track of our content...This is a very convenient way of staying up to date with the content of a large number of sites.
It makes it easier for other websites to link to our content. Because RSS feeds can easily be read by computers, it's also easy for webmasters to configure their sites so that the latest headlines from another site's RSS feed are embedded into their own pages, and updated automatically.Web syndication
Web syndication is a form of syndication in which content is made available from one website to other sites. Most commonly, websites are made available to provide either summaries or full renditions of a website's recently added content. The term may also describe other kinds of content licensing for reuse.
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Italics indicate discontinued software.
Data exchange formats
|Human readable formats|