I had an offer on my blog from a company that does 'after' photos (you know where you send them a current picture and they edit it to reflect how much weight you want to lose) - they are giving away 5 after photos, and you just need to enter a comment on my blog to be entered (through the 29th)
here
Hope this is okay to post, if not, mods can remove it.
Sounds like it could be a cool motivational tool.