I'm offended already, FFR is not a Stepmania flash game.
It runs on its own system, on 30 FPS I believe and Step has a higher FPS.
I've been a member since forever, so as a FFR veteran, the closest thing to Step is ITG/DDR.
The judging system is not the same as Stepmania because of the FPS. That's why on some songs, the jacks are messed up, like Crowdpleaser.
Sorry to offend anyone.
Btw, there was a mirror that people used to play FFR when it was down:
Playing osu! | Starcraft 2: Heart of the Swarm