Cross-posted on gamasutra [http://www.gamasutra.com/blogs/LarsDoucet/20120322/167131/Pay_What_You_Want_and_the_Four_Currencies.php] [http://files.fortressofdoors.com/images/pay_what_you_want_purchase.png] [http://files.fortressofdoors.com/images/pay_what_you_want_purchase.png]Today I'd like to apply my