The hashtag was born on IRC networks before migrating to Twitter and evolving into something that people verbalised ("hashtag fail"). Now some factions are trying to turn it into a gestural expression ...

The use of the hashtag as a Twitter tool to denote a specific topic in order for the masses to follow along—which was first suggested (in a Tweet, naturally) by Silicon Valley regular and early ...

Number sign. Pound sign. Octothorpe. A hash. Hashtag. #. What is it? What is its purpose? And most importantly: how can you use it to increase your press release’s visibility? The “hashtag” ...