I actually think that full tilt is one of the best sites for free rolls, they have lots of them and the actually pay dollar amounts. And even though they take a massively long time to complete, they have an advantage over other sites that I really like. They actually play like something resembling poker! Even though they are still free rolls so still terribly fishy, because of the structure skill actually plays a part bin the game.
Despite only being on full tilt for a little and despite only trying a few free rolls, I've had good success because they play like poker. I've played 3 Australia
free rolls and cashed twice and had to leave early in the third, but I was an average stack in the high blind levels for that one. I've only played 2 of there 150 holdem free rolls but made deep runs in both despite not cashing. I played 1 of the 150 Omaha free rolls but it was at the same time as the Australia free roll that I had to leave early and I needed to leave this one early despite being a big stack. I've also found the round 1 free rolls that give weekly freroll tickets to the top 250 to be incredibly easy to cash in. I've cashed in 3/3 in those ones and just used me first ticket yesterday.
And I'll tell you what. That weekly $1000 free roll was really wonder full because I got to play real poker, skills actually played a really big part of it and despite being an ~12,500 player field (90 getting payed) I actually played for 5 1/2 hours only picking up a single premium hand, but I was actually able to use position and good play to pick up pots keeping me above average the entire time, I never even got lucky. It kinda sucked that I had to get up at 5:00am to play it and it ended in a really tough spot where on 91 players I had a weak over pair vs a player who looked to be quite capable of taking advantage of the bubble. I decided to make the call after a long think because I felt he could be doing it with a lot of big aces that had missed the flop and I had already long since decided I was more interested in making the final table than min cashing. Anyway he had the bigger over pair and I busted (fortunately the bubble had burst well I was in the hand) but the point Im making is that despite all this I was happy to go through it because it was actually a tournament that in involved real skill and was an excellent excersise in patience, concentration and real tournament play.
Basically what I'm saying is full tilts free rolls actually pay money that has some use and they play to a higher quality than a lot of other free rolls thus can be excellent practice for real tournament play.