Fast Fold Poker Tournaments. I think you mean something like Zoom on PS.
Well the difference is you can fold and play on another table immediately without waiting for the next hand this = to more
hands per hr, so it can(but not necessarily will) = to more $ per hour.
If you are novice you can try 888poker they have something simmilar(I think it's called Boom but I might be wrong so google/wait for more responces).