Facebook Working on Incorporating the Hashtag
Posted: 3/15/2013  |  By: Evelyn M. Rusli And Shira Ovide | WSJ
Facebook Inc. is taking its business rivalry with Twitter Inc. into the realm of symbols: #Feud.

Facebook is working on incorporating the hashtag, one of Twitter's most iconic markers, into its service by using the symbol as a way to group conversations, said people familiar with the matter.