Fanball is a pretty good site, the live scoring is a bit of an issue, and the draft room is terrible. But I hear they've worked out most of the kinks. My draft this year stalled in the 12th round for about an hour, and it would lag pretty bad, but my guess is one of them had a dial-up connection. Anyway, getting back to the topic, my keeper league will keep one to two people after this year so that the pool of players at next years draft will have plenty of depth. Keeping anything higher than three is a real risk, mostly because you're getting stuck with the same players year in and year out, and the draft becomes shorter and less fun. Some leagues incorporate a system where you can only keep a player on your roster for two years before he must go back into the pool. Helping to mix up the rosters every now and then. Not quite sure of the name, but fanball will carry over your roster every year as long as you decide to keep the league.
I wish their was a knob on the television to turn up intelligence. There's a "brightness" one, but that doesn't work.