Friends we understand your concern but every month we run a report of traffic/conversion to premium by country and adjust groups and rates accordingly.
On the other hand many countries have been promoted to Group A
@BloodSucker:
We adjust rates based on conversions.. We see other PPD paying lower rates for 10,000 downloads... there must be a reason!
@Bloodsucker: Actually the reason is the poor conversion of traffic, believe it or not USA traffic converts very bad (at least with us)
It's either reducing rates or stopping PPD, not enough sales unfortunately