being partners with flashcash sounds a bit fishy.
Especially considering flashcash has a reputation for screwing over webmasters and stealing webmasters money.
It just means now i dont trust you or them
Def a good idea though, i was speaking with a friend about the need for a service like this recently.
I think a better way to go about this is to do ACTUAL test signups not hit monitering.
Best of luck though.. ( site looks good )