I sign up one advertiser account 3 days ago, till now not any feedback from CPM star, my account still pending
I've only dealt with them on the publisher end: they seemed to be pretty communicative then. No idea what they're like from the advertiser end though, I'm afraid.
Anyone?
I own some game products and advertise with them. They don't really accept affiliates. They work with everyone direct and also a few networks.