"Spend" your PS3 gold trophies for a chance to win memorabilia(costumes and replica weapons, mostly) or perhaps a trip to QuakeCon or Amsterdam. Plus, there's whatever's in the mystery box. It could even be a boat.
Though it's probably not a boat. That was just a Family Guy reference.
Edit: Also, I may or may not have put this on the right forum, but this one's close enough.
Edited, Oct 23rd 2013 10:55am by Poldaran