This contest started July 2nd. The first prize of the contest is an slim, portable Sony PSP 3000 series (piano black). This is courtesy of Upper Deck's Social Media Poll. Here are some details about the prizes.
1st Prize - 1 Sony PSP 3000 series (piano black)
2nd Prize - Your choice of one of the cards listed below
3rd Prize - Your choice of one of the remaining cards (after the 2nd prize winner has chosen)
4th Prize - Your choice of one of the remaining cards (after the 3rd prize winner has chosen)
5th Prize - Your choice of one of the remaining cards (after the 4th prize winner has chosen)
6th Prize - Your choice of one of the remaining cards (after the 5th prize winner has chosen)
7th Prize - Your choice of one of the remaining card or 300 CardCash (after the 6th prize winner has chosen)
8th Prize - 300 CardCash or the remaining card (whichever remains after the 7th prize winner has chosen)
9th Prize - 200 CardCash
10th Prize - 100 CardCash

Card prize list (this list is subject to change):

1. 2010 Topps UFC Main Event Mat Relic Alessio Sakara
2. 2009 Press Pass Element Race-used Flag "Element of the Race" Juan Pablo Montoya #'d/99
3. 2007-08 SP Game Used Authentic Fabrics AF-JG Jean-Sebastien Giguere (Hockey)
4. 1999 Collectors Edge Authentic Game Ball Ron Artest (Basketball)
5. 2009 UD Series 2 USA Baseball Autograph Mike Leake
6. 1 premium football card to be named later
You may get further details about the contest here.