Have you used PSWBilling and Jettis?
 

Does anybody have experience with these companies? What are the Pros and Cons?

We use Jettis and have found them to be very efficient, friendly and 100% genuine in every dealing - woudl recommend you call Alysha in sales or Jennifer in support and say Jack and Rob from Cool Piranha recommended...

Thanks for the info. Do you know if they have an affiliate referral program? (wm make 5% of the wm they refer, etc)? I could not find it on their site.

Yes, I believe they do...email them at [email protected] to have all of your questions answered...they're great!