deepbit.net looks to be well ran I am just curious looking
at their front stats compared to btcguild and slush's pool
What's wrong with the stats ? Looks fine to me.
I think so, they pay invalid blocks, I don't think they can afford this part.
so they will hidden some good blocks
1. AFAIR there is no pool with invalid rate higher than 3%, so any pool can afford paying for invalids while taking 3% fee.
2. We can't hide any blocks because this will cause easy detectable luck loss.
Also it would be too risky to mess with data when anyone can check the blockchain.