On an e-commerce site, how do you attribute a sale to PPC if a visitor comes from PPC but then returns to buy through another website?


Can we use cookies and if so how do we install this? What software could track this kind of conversion scenario?

Adwords Google PPC Conversion

asked Sep 22 '11 at 15:43
Nikolay Piryankov
683 points

2 Answers


Our site has a homegrown affiliate program. I set a 30-day cookie when they land on the site from the clickthru. The value of the cookie identifies the affiliate they came from; for a PPC ad campaign it would identify which campaign they came from.

Later when they order something from the site, we simply check if that cookie (still) exists. If it does, I write a row to a "clickthrus" table in the DB, and then a sales reporting page later queries that table for building its statistics on demand.

answered Sep 22 '11 at 16:07
Jennifer Simonds
11 points
  • so your software was developed in house, which doesn't really help me, but at least its good to know that cookies can be used to identify specific PPC campaigns. – Nikolay Piryankov 12 years ago


Google released multi-channel funnels last month. It will track all of these various channels.

answered Sep 22 '11 at 20:27
Jon Di Pietro
1,697 points
  • WOW, just checked this out. It looks like just what I need. Thank you! – Nikolay Piryankov 12 years ago
  • You're welcome. Good luck! – Jon Di Pietro 12 years ago

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