What payment gateways do you use for your app?
swombat: Based in the UK, we use a Barclays merchant account and SecureTrading as our payment gateway. SecureTrading is great as they provide excellent customer service. Their payment gateway set-up is a bit funny (involves setting up a java gateway), but it works.I've written an ActiveMerchant plugin for ST:http://github.com/swombat/active_merchant