I've always wondered which payment solutions are being used the most, and would love to get an idea of what is being used ranked by volume of usage. I'm guessing it is something like this:
1. Paypal
2. Credit Card Gateway (could sub rank this)
3. Google Checkout
4. 2checkout
5. Moneybookers

Anyone have any hard numbers on this?
(or anyone want to take a guess?)