With LinkedIn (LNKD.DL) struggling to prove itself in as more than a social network with an unproven business model, shares exploded today, up more than 20%, on news that the company beat earnings expectations and reaffirmed solid guidance. In this video, Motley Fool senior technology analyst Eric Bleeker tells investors about the business model that allows this company to be more than just a social network, gives us a look at where its revenue really comes from, and talks about where we can expect the company to go from here.