Overall we have been happy with everything. Customer service was helpfull when we first set everything up. The latest changes to their service has made us start searching to find something better.
I know there are better systems out there, so check around first. Here are a few things to think about before signing up with them.
The admin panel is not very user friendly and is very disorganized. Takes a little while to get used to.
The prices keep going up every year, they just raised them up and additional $10 per month.
Access to user preferences like passwords, addresses and user info has been disabled for the accounts. Now it requires a phone call or fax to make changes. (You still have access to change your customer info over the web just not your admin info)
I just checked out your site, finally an affiliate software created for web hosting companies. Nice work!
We, are now using Hsphere with automated billing and it is already set up with the Payflow Pro link.
Before this we had a secure form and processed each new account manually. We couldn't find a way to link automated sign ups to reoccurring billing. Verisign support never gave us a direct answer to the question.
I am sorry I couldn't be of more help, but if your affiliate software can integrate with hshpere you just made another sale