Adywan's PayPal address is in his sig.
Lucas and co seem to be content to let us be as long as we're not attempting to profit. Ady has made it clear that these donations are only donations, that he's not making any profit off them, and that he is not selling the film. I'm pretty sure they know what's going on with Revisited and if they were going to jump down our throats they would have done it by now.