Online Casino Affiliate Question?

Where can I find some good online casino affiliate programs? do I have to sign-up with each online casino affiliate individually or is there a network which hosts a lot of these offers? It seems like this would be a good niche because eventually someone would sign-up who has a "gambling problem". I'm not quite sure all the ways I would promote it yet but I have a few "ideas". Thanks for any input you guys have!

http://odigger.com/?s=&post_type=affiliate_offer&is=1&num=&bcp=c&ca_id=167

To be honest, this is a really hard niche to promote. A lot of advertising sources do not allow you or are heavily restricted on gambling promotion.