There is also the odd site that gives you free money every once in a while. But those sites are rarely listed. Redstarpoker did it when they opened. Paralell Poker gives you 3$, but I don't get that site. T6 Poker had huge freerolls when it started. I don't know how it is now. I made a couple of dollars with freerolls there, but blew it on the cash tables.

I think freerolls are generally much better than playmoney. At least you can build a bankroll from there.