Facebook (NASDAQ:FB) may have a ways to go when it comes to matching Google's (NASDAQ:GOOG) ad...

Facebook (NASDAQ:FB) may have a ways to go when it comes to matching Google's (NASDAQ:GOOG) ad monetization ability, but one area where it has a clear edge is in enabling the "discovery" of content users aren't actively searching for. The sharing of everything from Ticketmaster purchases to newspaper articles on news feeds is responsible for Facebook's enormous share of referral traffic, and stands to open up new revenue streams.