Google Real-Time Search was a feature of Google Search provided by Google in which search results also sometimes included real-time information from sources such as Twitter, Facebook, blogs, and news websites. The feature was introduced on December 7, 2009 and went off-line on July 2, 2011 after the deal with Twitter expired. Real-Time Search included Facebook status updates beginning on February 24, 2010. A feature similar to Real-Time Search was already available on Microsoft's Bing search engine, which showed results from Twitter and Facebook.
The interface for the engine showed a live, descending "river" of posts in the main region (which could be paused or resumed), while a bar chart metric of the frequency of posts containing a certain search term or hashtag was located on the right hand corner of the page above a list of most frequently reposted posts and outgoing links. Hashtag search links were also supported, as were "promoted" tweets hosted by Twitter (located persistently on top of the river) and thumbnails of retweeted image or video links.
In January 2011, geolocation links of posts were made available alongside results in Real-Time Search. In addition, posts containing syndicated or attached shortened links were made searchable by the link: query option.
In July 2011 Real-Time Search became inaccessible, with the Real-Time link in the Google sidebar disappearing and a custom 404 error page generated by Google returned at its former URL. Google originally suggested that the interruption was temporary and related to the launch of Google+; they subsequently announced that it was due to the expiry of a commercial arrangement with Twitter to provide access to tweets.
A hashtag is a type of metadata tag used on social networks such as Twitter and other microblogging services, allowing users to apply dynamic, user-generated tagging which makes it possible for others to easily find messages with a specific theme or content. Users create and use hashtags by placing the number sign or pound sign # usually in front of a word or unspaced phrase in a message. The hashtag may contain letters, digits, and underscores. Searching for that hashtag will yield each message that has been tagged with it. A hashtag archive is consequently collected into a single stream under the same hashtag. For example, on the photo-sharing service Instagram, the hashtag #bluesky allows users to find all the posts that have been tagged using that hashtag.
The use of hashtags was first proposed by Chris Messina in a 2007 tweet that, although initially decried by Twitter as a "thing for nerds", eventually led to their use rapidly becoming widespread throughout the platform. Messina, who made no attempt to copyright the use because he felt "they were born of the internet, and owned by no one", has subsequently been credited as the godfather of the hashtag. By the end of the decade hashtags could be seen in most emerging as well as established social media platforms including Instagram, Facebook, Reddit, and YouTube. So much so that Instagram had to officially place a "30 hashtags" limit on its posts to prevent people from abusing their use, a limit which Instagrammers eventually circumvented by posting hashtags in the comments section of their posts. As of 2018 more than 85% of the top 50 websites by traffic on the Internet use hashtags and their use is highly common with millennials, Gen Z, politicians, influencers, and celebrities worldwide. Because of its widespread use, hashtag was added to the Oxford English Dictionary in June 2014. The term hashtag is also sometimes erroneously used to refer to the hash symbol itself when used in the context of a hashtag. Formal taxonomies can be developed from the folk taxonomy rendered machine-readable by the markup that hashtags provide; this process is called folksonomy.Outline of Google
The following outline is provided as an overview of and topical guide to Google:
Google – American multinational technology company specializing in Internet-related services and products that include online advertising technologies, search, cloud computing, software, and hardware.Real-time web
The real-time web is a network web using technologies and practices that enable users to receive information as soon as it is published by its authors, rather than requiring that they or their software check a source periodically for updates.