Those guys at TDS have a P.O.box (TRS ...the right stuff.biz). I often listen to their podcasts. They are constantly in coniptions with bitcoin, (paypal banned them), and all kinds of cyber donations. The last show I heard, they admitted that the easiest way to receive donations was from a PObox. (but beware of the dangers) If the Poal mascot icon was available as a bumper sticker, I'd buy $50 of 'em. edit: $100.