Here’s How I deal with users who steal my Bitcoins
blog.ice-dice.com
blog.ice-dice.com
They give you 0.005, but you have to bet the total of 1.5 to withdraw what you have.
So basically you have to stay alive after 300 bets of what they give you, which is nearly impossible.
It's a pretty safe "giveaway" on their side, and it achieves the goal of attracting gambling addicts.