I agree with you about cross marketing definately.
They all use one affiliate payout processor – Iglobal and they consolidate your three totals for each month into one.
But I came to this question while playing. I was a member of Starluck but my username there automatically works at and has worked at all their other casinos: like country farm casino or hwatever its called lol, party bingo, planetluck etc….i dont think I had to reregister….
so if I didnt have to reregister how would their site recognize my origination for an affiliate?