[tworats]

I think you're making my argument for me: if anyone has stats on the total number of adsense ads served vs adwords ads served, we can derive the value of adsense vs adwords ads.

There are many more adsense ads displayed than adwords - it's google searches vs. most of the rest of the web. Yet it only makes up 1/4 of google's revenue.

Last I checked there was an order of magnitude difference between the value of an adwords vs. adsense ad.

[dpearce]

1/4 of Google's revenue is a pretty big deal. The author is suggesting that's the worst case scenario for Facebook, that they take over that $10B in revenue from Google. Add that to whatever they can do with Facebook Credits (with acquisitions like Karma), and their future looks bright.