Good work Brian. Yes, many of us have advertised on Ad Brite or Ad Engage (even worse) and no sign ups from the traffic we were supoosedly getting.
The only reason we havent blasted them as pure rogues like the PPC engines is at least you can see your ads being displayed on sites and when you click on them they are routed properly through the system. This is a LOT more then can be said about a number of PPC and ALL cheap traffic vendors.