you have to focus attention the types of people interested in your type of work. casting a hook blindly before looking to see if its in water, won't get you that far. thing is about advertising, from what i can see on the attitude on facebook, you have to be a part of the group before mentioning you sell things. you can't just slip into the side entrance toss your banners out and run out again. they will mark you as a spammer.
instead you would have to know something about the subject then slip in and just like here, become a part of their community, then let it slip you sell things like that as art. but that kind of relationship would take time and you can't fake it either. like i'd like to join different groups, but i can't just advertise just like that. its no different then the rogue spammers that hit us for viagra, or what have you. you'll need to find them on twitter or the like.
i don't go the facebook way because there is no promise of a sale, and you really have to spend a lot of time there in order to get people to know you or to create a following.
---Mike Savad
MikeSavad.com