Wouldn't that decrease conversions, since visitors that use IE get the alert "Are you sure you want to leave a secure site" when clicking on your affiliate link?
Also, SSL slows down page load time since it encrypts all the data. And in PPV page load time is very important.
I would be curious to know if anyone uses SSL on their tracking domain (especially for PPV) and how it affects conversions.
I'm using SSL on one of my tracking servers and I don't see any alert in IE on the click through, but you're right about page load time for PPV, you're better off skipping the SSL if you want quicker page loads.
I'm curious about this too, anyone else using SSL on their tracking server?