Facebook Exchange: A New Way For Advertisers To Target Specific Users With Real-Time Bid Ads | TechCrunch
Charley Ma stashed this in Facebook
This is one of several monetization experiments Facebook is trying.
It will be interesting to see if this gets any traction for them.
The most interesting monetization experiment in my opinion is Mobile Sponsored Stories.
But I think long-term the best business model for Facebook is as a PayPal competitor.