No major post today is complete without a hashtag, but where did the trend start?
August 2007 - Hashtags first proposed for use on Twitter
July 2009 - Twitter officially embraces the hashtag linking to a list of all tweets for anything proceeded by #
January 2011 - Instagram add hashtag support
Spring 2011 - Twitter plays a role in the Civil unrest of the Arab Spring. #Bahrain becomes one of the most used hashtags of all time
October 2011 - Google+ begins automatically linking all hashtags in posts
January 2013 - Half of Superbowl ads include a hashtag
June 2013 - Facebook begins supporting hashtags
October 2013 - The Advertising Standards Authority (UK) and the FTC (USA) state that adverts made via a celebrities Twitter page should incorporate the hashtag “#ad