And I'll proxy your bets for free, but theymos is a pretty trustworthy guy. (Given that he's The forum admin and all...)
Proxy option 1: Send your money to me. If pirate doesn't default, I'll pass it on to MNW. Otherwise, I'll give you your money and your 100% ROI. This works if you have 0 rep.
Proxy option 2: Give me some reason to trust you. If you are a 3-post user with a solid OTC rep, sign a contract with GPG and I'll increase my bet to accommodate yours. This works if you have rep but don't trust me.
Never give your bitcoins to anyone, except when you buy something or exchange your btcs to fiat.
Problem is, MNW is the more trusted party. Unless you pay up-front, if you have 0 rep, then you've basically been given a "free option." Bullshit. That is why users need 250 posts to make bets in this thread.
Q: Why will you proxy my bets for free, you scammer?
A: Because I think this thread is good for the community. The more people that bet in this thread, the better off the community is, and I thus benefit indirectly as a member of the community.