Originally Posted by BigFurry

Do you know what cookie stuffing is? A scammer affiliate could potentially place 100K cookies per day. For visitors who did not even click any link. With a first-cookie-wins approach, this scammer affiliate will get all the sales, even if the user didn't click anything on the site.

(Of course cookie stuffing illegal, affiliates have been sentenced to jail time in the past -> Clickticker | Affiliate Tracking Platform )

In my opinion, last click should get the sale, as that's the link that convinced the surfer to join.