How come Peercoin doesn't have these problems? Or do they?
I have lost tons of YACoin from BTER-- they are scamming a lot of people. So I won't be in a position to offer bounties for a while. What would be the best type of bounty? More pools with different features? A javascript mining program/pool like bitminter? I cringe at the idea of centralized checkpointing or reduced POS awards.
Peercoin is using the centralized checkpointing approach as far as I can tell.