Serving as a perfect follow on from my introductory Hashtag-tastic post, you should read Lilach Bullock’s #hashtastic overview. Lilach, a Forbes social media power player, considers not just the evolution of the simple hashtag (for which we owe a huge amount of thanks to Chris Messina) on Twitter, but also how it has been embraced by several other social networking sites, from Instagram to, belatedly, Facebook.
Definitely worth a read – let me know your thoughts. For me, the best explanation of a hashtag is still by Marc Custers:
“Personally I’ve always considered hashtags as a shortcut to similar information. Hashtags are for me a kind of twitter library shelf ”