Yes! PayPal has a referral program too. They will give you 0.5% from the revenue of the merchant that you referred and that signed up with PayPal for a Business or a Premier Account, for the first 12 months of that account. This will apply just for non-eBay revenues.

Here is my PayPal referral banner. I will be glad to sponsor and introduce you to Paypal!

Sign up for PayPal and start accepting credit card payments instantly.