$30, 4 weeks to lose 4% of your weight, starts in 8 days and I just signed up. Those that succeed get a split of the money. Currently the pot is up to $12k. http://diet.bt/1fplstd
There are others but I've been following blogilates for a while. She started this one and has a pretty big following so I'm hoping to make some money and get motivated.
I'm a little concerned since I can't seem to lose weight to save my life lately and I've also been lifting a lot, but $30 doesn't hurt THAT bad. But bad enough to where I don't want other people to get it.
Hope this is okay to post. Not gonna lie, inviting people gets you prizes too but honestly I just think this is a good idea, swear I'm not out to spam anybody.