IANAL, but although you're based in Germany, there are important legal constraints for running a "raffle" in the United States. (e.g. <a href="http://www.rafflefaq.com/united-states-raffle-laws/" rel="nofollow">http://www.rafflefaq.com/united-states-raffle-laws/</a> )<p>You can't do it arbitrarily, especially for one that's online with a nontransparent winning process.