simple...
They always pay you!
I've personally pushed more sites with CCBill because I know I will get a check each and every week from them, rather than having to chase down a program.
From an affiliate pov, its more secure and reliable then the company paying themselves. Sure, there are some stand up ones that I have been receiving checks and wires from for years now, but for every one legit, there are ten shaddy companies looking to fuck someone over.
