Facebook’s biggest problem is that it’s a media company

[Commentary] There’s been a lot of attention paid to Facebook’s business model recently, especially with the news that General Motors has killed a $10-million advertising campaign devoted to the giant social network — not exactly a great sign of confidence in advance of the world’s most eagerly anticipated IPO. And GM’s move is only the latest indication of discontent, as other advertisers are also questioning their spending. What all of these moves reinforce is that while Facebook may look like and function like a social network for the majority of its users, on the business side it looks almost exactly like a traditional media company, and that is both good and bad.