from this page
http://bbs.gofuckyourself.net/gfy_contests.html
that also states they are giving out PDAs now for the longest thread (all though i think it would take an entire team of people to keep track of that around this place)
Hidden Banner Prizes!
How to win: Hidden inside of the random banners on GFY are winning codes for GFY Sweatshirts, Mouse Pads, Adult.com Hats, GFY T-shirts, and some mystery prizes. Basically take the time to check out the great people who make GFY run and you never know what you might find hidden in there. To claim your prize just follow the instructions on the winning page and we will get you your sweatshirt. LIMIT ONE PRIZE PER DAY.