Try this out:
http://www.youtube.com/watch?v=tEs7G3Vku-4I have gone from 0.90 btc to 3, and cashed out.
I lost 0.5 via this method, but if you message the youtube uploader, he will refund you.
This guy is crazy, he gambles with 1btc to show he can do this.
sure I might try that game, but maybe not with my own BTC.... I've already done some gambling. It's a fun rush at first I guess....