The revenues are directly correlated to the click through rates for display ads which are much more akin to what facebook is offering.
Separate out Google's search revenue and display revenue and you'll see there's a big differentiation there.
Separate out Google's search revenue and display revenue and you'll see there's a big differentiation there.
However... recently I've been seeing facebook ads where they are simply reshowing old status updates from my friends where they have linked/liked products, and pages. I'm not sure that reminding me of things my friends have liked and linked to isn't a more meaningful advertising experience. It's certainly not sufficient to support Facebook, but it feels like a new, possibly more valuable, kind of ad.