leboobs

How do you guys work out which of your paid ad campaigns are turning into affiliate sales?

As far as I can tell, I can track the process this far in Google Analytics:

1. User clicks on a paid ad
2. Arrives on my website
3. Browses around different pages
4. Clicks on affiliate link

After that point, CCbill and others will be able to tell you the referral URL of a sale which you can't really use to narrow down to a specific user and then work out how they arrived on your website.

Its pretty key to know how a user found your website if they end up being one of your customers. Is there a way to track this if you're sending your traffic on to affiliate programs like ccbill?