Friend and colleague Bob Manley let me know about FOAP, a web service that is building a market for photographers to sell their local, real-live photos to companies looking for stock photography.
The idea seems interesting; take a photo, achieve a minimum score of community votes, then its eligible for sale in the marketplace. You get $5 out of the $10 selling price.
Their website also has a good summary of Commercial vs Editorial license rules concerning people’s faces.