According to the Upper Deck Blog
The Best Online Community will receive: a trophy, a variety of unopened product, a LeBron James UDA basketball and a 2009 NFL Rookie Photo Shoot signed football (autographed by more than 25 players) to use as giveaways with their community of loyal collectors.
If HobbyKings wins, of course the contents of the prizes will be given to its members! Although the trophy would stay put :)
Be sure to vote on some of the other categories like Best Box Breaker or Best Blog (in Upper Deck Blog link above)
Good luck to all of the participants in the poll!