One of the easiest ways to generate credit card spend over the years has been using Amazon Payments. Amazon Payments let you send someone else $1,000 per month funded using a credit card. So while you’d pay a fee to use Paypal or another money sending service, the first $1,000 per month was free with Amazon Payments.
Why? Because they were trying to steal market share from Paypal and weren’t a big player in the market before. They figured it was a nice incentive for people to try Amazon Payments over Paypal, and I’m sure it generated a decent volume of transactions. Of course they weren’t exactly profitable, since it was the same people sending $1,000 payments funded by credit cards month after month.