good discussion (check the comments too) of the hoops you'll have to jump through once you have the enviable problem of your customers wanting to open their wal

good discussion (check the comments too) of the hoops you'll have to jump through once you have the enviable problem of your customers wanting to open their wallets :) annoyingly, paypal and google checkout really seem to have dropped the ball on flexible recurring billing (paypal requires buyers to have a paypal account, and google punted on recurring billing altogether)