DIET BET --anyone get good results?

If you've never heard of a dietbet, go check it out: http://diet.bt/1cnEGwD .

I joined a game from an online Pilates trainer/website called Blogilates (go check that out too, really cool stuff!) that has a few really cool random prizes plus getting to split the pot if I were to win my bet too, of course :)

Has anyone else done a dietbet before and how much weight did you lose? Any bad experiences with the site at all?

Thanks everyone!