Check out wiki:  http://en.wikipedia.org/wiki/Freeroll

"A freeroll tournament is a tournament with no entry fee, although some freerolls require a payment at some point to gain entry to the tournament."

In luckyflop, 5m and 1m hourly freeroll is over, you can play ring games to get lucky points, you can join different freerolls(1m, 10m, 30m, even 500m) with your lucky points.