See sig for a BIG list of programs, though I don't have info on which pay by wire. I assume most do, and just about all respectable programs will have iframes ... except ClickCash of course ;)
Btw, make sure to preview the iframes, especially if you're going after a niche. Many sites still have performers showing up in categories they have no business being in. And from my experience, that is very important.
Good luck
