Marketpress - integrate paypal Merchant Referral Bonus Program

Hi,

I wonder if there could be a way to integrate a referral link for Paypal's Merchant Referral Bonus Program.

I will be using multisite with Marketpress and only using Paypal for payments.

I figure there could be many new Paypal accounts created as a result which could lead to a good revenue stream for site owners if signed up to paypals affiliate programme.

I wonder if this would also be useful for many of the other plugins?

Nick