[Linda Buquet]

Yes Rob is right. Some affiliates just send the traffic directly to you. They pay per click and hope to at least double their money on the commissions they make from your site. Google has made this type of PPC harder by only allowing one ad per domain.

So that's forced more affiliates to send traffic to a landing page on their own site that pre-sells your product, then sends the traffic to you.

Obviously your payouts and conversions need to be good enough for PPC affiliates to make a good profit or they won't promote your site.