What sort of stuff is at this site? What doe free rolls give you? Is there a limit to how many times you have to play the free roll money in order to withdrawl?
There is no limit to the number of freerolls you might enroll, at least on betcoin, Nitrogen or SWpoker.
As for the doe, you can get a good amount if you are a winner. After some wins you have a nice stack to play with. And with that stack you can recharge another Poker room account and collect the first deposit offer.
If you have the brains and the luck, you can use this technique in several rooms.