If you sponsor a contest, make sure you stay away from any actual cash.
Make sure that your sponsor is going to stick by his/her word.
Even some of the biggest and best established places can suddenly pull out from under you if they think your player quality is inferior, or they can just be late delivering.
People who won something want it RIGHT NOW. Waiting a week or longer for it will often send them screaming fraud from the roof tops.
Make sure you can absolutely GUARANTEE IMMEDIATE delivery of the prizes.
Casinos often don’t bother to think how a couple of days late delivery of the prize can really hurt an affiliate and damage reputation considerably.