But, since I couldn't help you with that, re-add bitcoinpool.com
Here's why:
After looking at my account settings I realized that if you donate 1% or more to the pool they will not implement any anti-hopping measures on your account. I think that's a good system and we should look into making similar arrangements with other pools. I'd be willing to donate up to 5% at some pools, to be able to hop freely. The pool can keep it or redistribute it to their full time miners. Just a thought....
bitcoinpool cuts your reward in half if you have been in the round for less the 50% of its duration, setting a donation does not stop this. the pool op takes the 50% they remove as a fee for being a hopper/par-timer/. I will no longer be donating to this pool as a result of this.
"you will find that donating any percentage of your earnings (setting is in your account profile), you are omitted from being flagged as a pool hopper"