As soon as the battle starts the player getting sauced will be notified and can retaliate.
Once battle begins, each player has 24 hours to get more people to sauce (vote against) the other person at all costs. Facebook it, digg it, email it, tweet it, tape it to the wall, who cares! You DON'T WANT TO LOSE.
Once the 24 hour deadline is hit, the player who got sauced the most is the loser. That photo (NO MATTER WHAT IT IS) will be posted on the front page of the site for a week.
The Winner: Bragging Rights.
The Loser: World Wide Humilation.