Quote Originally Posted by marc77
Also if an affiliate just forwards visitors to your website (just click-through commissions), it is nearly impossible to know which sales origin from which affiliate. The necessary tracking would be quite tricky.
The tracking implemented by affiliate programs is no more tricky than any CPC model. The publishers include their ID tag to any of their links which adds a tracking cookie to the visitor's machine to track the sale.

Most of the reporting available even offers what publisher is linked to each conversion. So, everything is really in place to set up paying additional sales taxes. I'm just crossing my fingers it gets over-turned.