Making money on Facebook

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I am looking for ways to make money through facebook aps. I know about cloudcrowd. That is a nice and easy ap, but I want more something with more work to do. Facebook is a great place for me to share my online writing, connect with friends, and to play games. I also use mylike which posts ads on twitter and facebook, but I make most of that off twitter. I really like to find out if there are more facebook aps like cloudcrowd. Does anyone here make money with facebook aps? Please share.