In my "real life" business I have routinely payed referral or finders fees to peope who have sent me work. Usually it's just $25 or $50 but it is a little thank you for sending me the job. But I would say that most of the time I have done this with people who will be ongoing sources of work such as decorators or contracters who don't do the kind of work that I do. So if your friend has some class, perhaps he'll do something nice for you or lay a nice piece of ivory on you. At least a hearty thank you and a beer at the next show are in order!
