FILE - In this Monday, May 9, 2011 file photo, LinkedIn Corp., the professional networking Web site, displays its logo outside of headquarters in Mountain View, Calif. Linkedin is

... more 

FILE - In this Monday, May 9, 2011 file photo, LinkedIn Corp., the professional networking Web site, displays its logo outside of headquarters in Mountain View, Calif. Linkedin is reporting their fourth quarter 2012 earnings on Thursday, Feb. 7, 2013. (AP Photo/Paul Sakuma, File) less