I just plugged my monopoly money from BTC-Arbs into
http://remitrade.com/?partner=sev09. Feel free to use my referral or not. I've only been in a few days, but it's paying out. You can't withdraw your money until the end of the "investment period", though. Enter at your own risk.
RemiTrade had good reviews from InstantScamAlert.com, though, so I thought I'd give it a shot. It's play money, after all.

hmmm... daily profit over 1%, little suspicious...
however i'm into bitcoin-trader.biz since the beginning of april (just with one $20 share) never had problems cashing out every ~10 days, but i'm unsure about renewing after the 120 days period....
If you are unsure about $20, you should not be in Bitcoin at all....