5 Important Events That Changed Social Media This Year: "2013 saw a ton of significant changes to the social media landscape. Facebook introduced hashtags, in a clear bid to outdo its main competition. It also introduced the ability to properly search the social network with its Graph Search.
A year after Facebook, Twitter had its own big IPO moment, debuting at $26 and closing at $44.90 a share, on its first day trading day."
'via Blog this'