I have a game that is playable at the moment from the main website (ysabel . eu) and from Facebook (do a search for Ysabel in application directory and you'll find it).
My experience with Facebook is very limited, but I do know that there are million of people using it.
I'm looking for a person able to promote my game on Facebook. When applying for this job please specify how are you going to do it, estimate number of users, how long it will take.