Although I've said it before I'll say it again, while I fully support the idea that deepbit getting too many people is a bad thing I will have to interject some things here.
Most miners are not on these forums, and so these warnings will go unheeded because most people just found out about bitcoin from their friend, or some news article that mentioned bitcoin and the largest pool deepbit.
These same people are the ones driving the price of bitcoin through the roof and making it all kinds of profitable. So... we all enjoy enhanced profitability and hate the threat to bitcoins security. But for now one comes with the other. You'll have to get the word out through other channels than this thread though if you want to have any chance of making a difference.
I started with bitcoinpool. I got tired of idle miners.
I played around with some of the other pools, slush, etc. Didn't seem to provide enough info/data for me to know how I was doing.
Went to deepbit. No idling miners (so far), lots of data available to judge progress, etc.
People want minimum drama and results for their efforts. The security threat people are talking about is below 50% anyways, so it just sounds like jealousy to me at the worst, anti-free choice at best.
If I wasn't already sure that you knew nothing from your avatar (it could be ironic) the above confirms it. Plenty of pools provide plenty of information/return comparable or superior to deepbit. There is nothing special about the pool except for two things:
1) Highest hashing rate -- translates into lowest variance (although when there is variance, the low payout makes it very very very unprofitable).
2) Pay Per Share -- The best option for casual miners. This to my knowledge only exists on deepbit. If you are a serious miner though this is a horrible option (10% off the top).
Payouts, information, all that other stuff is just bunk though, even steven.