I want customers to be able to pay us through our website but I also want us to be able to pay customers using the same payment method. I also want the payment processes to be simple (as possible!) and for payments to incur minimal fees.
I understand that implementing eWallet only payments with operators such as PayPal, Moneybookers, Click'nBuy (any others?) may be the way to go. What other options do I have?