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Google Conversion Tracking Cookie

by Sasha.


I ran into an interesting situation recently and I thought I would share the findings with our readers & clients.The issue is regarding the Google Conversion Tracking Cookie. How it tracks conversions, how long the cookie stays and where the conversions get attributed.

Since this is information is freely available on the web, these are not new findings per say, but more of a log of how exactly the process works.

When someone clicks on an adwords ad that has conversion tracking enabled a cookie is passed along to the user’s computer. Google tells us that the cookie is set to expire in 30 days. So anybody that clicks on the ads and converts within 30 days would still be tracked and the conversion data would be imported into the adwords interface.

But the main question is on what date would the conversion be imported to? The conversion Date? or the Click Date?

The answer is Click Date. Here is an example;

Let’s say John Clicked on our ad on May 1st, 2007. He then bookmarked the page and returned on May 18th, 2007 and proceeded to fill out the form and complete a sign up (conversion). In the Google reports it would show that John converted on May 1st (Click Date) rather than May 18th (Real Conversion Date).

Granted, most of the conversions would occur on the same date right after the clickthrough, but as the above example demonstrates some conversions could happen days or weeks after the click (with a maximum limit of 30 days), and be attributed to the clicks already incurred.

Cheers,

Sasha


As posted in SEO on May 2, 2007.

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