I use that site, and it's not bad. You don't have to download anything which is nice.
They have all sorts of poker games and limits/no limits and stuff like that. I generally just play no limit hold 'em for fake money...
You get $1,000 to start with, and if you lose that you can refill it twice a day.
The only things I don't like about the site is 1) for whatever reason the sound effects from the site aren't working on my computer...I don't know why and 2) when there is an all-in between two people, they really don't have any suspense to it...they just flip all the community cards down and then show the two people's cards, shove the money to the winner, and go on to the next hand. I would rather them show the hole cards, put them on two sides, and deal out the other cards slowly so you can "ooh" and "aah" as the hand unfolds. I just think that would be more suspenseful and fun.
Otherwise I like the site. I know another moderator on the football side uses it quite a bit and has no problems with it.