By: Vindu Goel, special to Overdrive
Facebook has joined the hashtag revolution, introducing a tool on Wednesday that allows users to add the # symbol before a word to signify its topic. The topic would then be easily searchable by other users of the social network.
Of course, anyone who has used the microblogging service Twitter is familiar with hashtags, which have long been used there to organize public conversations. Right now, for example, #manofsteel is a popular hashtag on Twitter because of the coming Superman movie. Search for that hashtag on Twitter and you can see the global conversation about the topic.