n 2007, the hashtag was a simple, yet revolutionary, idea that changed the way we organize and amplify content. Today, it is either endangered or more useful than ever, depending on whom you talk to. On the open social web, hashtags are an important unifying mechanism — not just for content but for people too.
Why is that? How did we get here? What’s next for this small but mighty feature and for the web at large? Here to tell us is Chris Messina, the inventor of the hashtag, the creator of the DiSo Project, and the No. 1 hunter on