What's the most simple way to accept monthly subscription fees?
dryicerx: Simplest is probably http://cheddarGetter.com or http://spreedly.com or http://chargify.com (they store and abstract the payment gateway apis for you, and do recurrence, along with managing and handling the user data, and exposing a super simple api to your end). But the catch is they also charge a fee...The cheapest is to use a service like Paypale/FirstData/etc which are a bit more tricky to setup that the cheddary/spreedly but also offer recurrance charging. The catch is you'd have to keep track of the user data and management, and slighly more tricker to change providers .