A 'like' sign stands at the entrance of Facebook headquarters in May 2012 in Menlo Park, California. After a dire stock market debut, Facebook has clawed back a large chunk of its losses as investors ... more 

A 'like' sign stands at the entrance of Facebook headquarters in May 2012 in Menlo Park, California. After a dire stock market debut, Facebook has clawed back a large chunk of its losses as investors look past the flubbed initial public offering and gradually warm to the leading social network less