Today I heard about a site called DietBet.  They host 28 day challenges and if you hit the target goal, you win your money back and then split the pot with the other winners. If you don't hit your target, your money goes into the pot for the winners. 

I signed up for the Blogilates challenge, which starts June 1st. It's $25 to join and  the goal is 4% weight loss. I think this is exactly what I need to motivate me. It's a small amount of money, but money is always motivating, and I was just talking about how I need to work on being good on weekends. If you're interested, here is the link... http://bit.ly/118hb0d