A post on the social media platform Twitter. Several hashtags are used in this post, including "CCCCWI", "TeamRhetoric" and "AcademicTwitter".
A hashtag is a metadata tag that is prefaced by the hash symbol, #. On social media, hashtags are used on microblogging and photo-sharing services such as X (formerly Twitter) or Tumblr as a form of user-generated tagging that enables cross-referencing of content by topic or theme.[1] For example, a search within Instagram for the hashtag #bluesky returns all posts that have been tagged with that term. After the initial hash symbol, a hashtag may include letters, numerals, or underscores.[2]
The use of hashtags was first proposed by American blogger and product consultant Chris Messina in a 2007 tweet.[3][4] Messina made no attempt to patent the use because he felt that "they were born of the internet, and owned by no one".[5][6] Hashtags became entrenched in the culture of Twitter[7] and soon emerged across Instagram, Facebook, and YouTube.[8][9] In June 2014, hashtag was added to the Oxford English Dictionary as "a word or phrase with the symbol # in front of it, used on social media websites and apps so that you can search for all messages with the same subject".[10][11]
^Chang, Hsia-Ching; Iyer, Hemalata (2012). "Trends in Twitter – Hashtag Applications: Design Features for Value-Added Dimensions to Future Library Catalogues". Library Trends. 61 (1): 248–258. doi:10.1353/lib.2012.0024. ISSN 1559-0682. S2CID 34506239.
^"What Characters Can A Hashtag Include?". hashtags.org. Retrieved September 21, 2017.
^Messina, Chris [@factoryjoe] (November 4, 2010). "how do you feel about using # (pound) for groups. As in #barcamp [msg]?" (Tweet) – via Twitter.
^Parker, Ashley (June 10, 2011). "Twitter's Secret Handshake". The New York Times. Retrieved July 26, 2011.
^"Chris Messina's answer to Why didn't the creator of the hashtag patent the concept?". Quora. Retrieved November 10, 2018.
^"The Inventor of the Twitter Hashtag Explains Why He Didn't Patent It". Business Insider. Retrieved March 19, 2016.
^Panko, Ben. "A Decade Ago, the Hashtag Reshaped the Internet". Smithsonian. Retrieved November 10, 2018.
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