Wanna make some money? Make a facebook application. People who have made them and inserted ads have already made thousands. All you have to do is make a good application that millions of people want to use, throw an ad or two in there, and VOILA you will see dollar signs.
Honestly, the API is not that hard to figure out, you host the materials you call on your own server, you just have to follow their guidelines for privacy, and use their psuedo programming code to make calls to their database.
Good Luck!
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