[Agrajag]

1) If I know that my friends don't have a snowball's chance in hell to win, I'd rather just talk to them and see what they think. If they agree, we would discuss wether they want to continue to the bitter end or not, and act accordingly.
2) Well... 1!
3) If someone was letting me win, I'd rather we just end the game right there instead, especially if its so obvious I don't stand a chance of winning. If I know I'm going to lose, there's no point fighting 'till the bitter end, might as well start a new game and let the fun start all over again.