I just have two questions:
-Why do you do that ?
-Where do you get the BTC ? From a mining rig ?
I want to promote bitcoins this way. Maybe you can tell someone about this lottery and he'll become curious about btc. And besides there are sponsor ads on the site.
I've mined a couple of bitcoins when it was possible without high-end super-expensive GPU... And I believe that even this small prize will be very valuable in few years. I don't believe in paper money anymore, I believe in gold, silver and bitcoins.