Primecoin is dead in the water due to Botnets.
Currently there's a 600K PPS monster botnet herder out there collecting about 75% of the coins, that's why you're lucky to hit a block every three days with 5000-15000 PPS now.
Any CPU based coin will be owned by the Botnets as soon as any real profit can be made.
Sunny King better get a GPU miner developed pronto if he wants this to live very much longer.
For the record, I believe that Primecoin is the first truly innovative alt coin in a very long time.
~BCX~
uh no, you can hit a block a day with 14K PPS
and in any event the 600K PPS person to have those resources are unlikely to squander the coins, and the secure the blockchain
and you are free to secure your own "botnet"
it takes time to set up a good miner and it takes risk, eg the price can drop etc.