BTW, what's he price of your solution? We sell ours for $150 only (including the affiliate id-handling module, custom installation and lifetime support) for unlimited number of domains
P.S. Out solution is intended for WordPress-based blogs/feeds. It's easy in installation and works with any version of WordPress!
Check this link for more info:
http://www.gofuckyourself.com/showthread.php?t=732473 ;)