Yahoo! Sports Survival Football is a free game that runs through the entire 2008 professional football regular season—which begins on Thursday, September 4 and is scheduled to end on Sunday, December 28.
Feel free to join the game at any time until Thursday, December 25. The first deadline for submitting a selection is 4:00 p.m. PT on Thursday, September 4.
Users can join a maximum of 10 groups (either Public or Private) over the course of the professional football season, but may not have an Active status in more than one Public Group at a time.
Lastly, you may only leave a group if you do so before the group's first pick deadline. After the deadline passes, you'll be locked in as member of that group and cannot leave it. Additionally, you may not join a specific group after its first pick deadline has passed.