If you have played at least one round, there is a little penalty if someone
leave a game, and the opponent still gets his battles points, clintz and XP.
By the way, if you accidentally close your brower, relaunch the game
within 5 minutes will bring you directly back to the battle in progress.
I don't know why, but I've been thinking about this a lot, and I may
have come up with something that stops quitting based on losing
without punishing people who have to leave for one reason or another:
if you quit or time out, you can't play for some amount of time (15-30
minutes would be my suggestion). If you have to go to dinner or
something, you won't care since you'll be gone, but if you're just
quitting because they have, say, DJ Korr, or a level 5 Leader, you have
to sit there for a while before you can play again.