Update: Google Informations - Adwords Auto-Tagging and URL Redirects

Adwords auto-tagging makes it possible for you to see Adwords information in your Google Analytics reports without manually tagging each keyword. You simply enable auto-tagging in your Adwords account. The auto-tagging option is located on the My Account tab, on the Account Preferences page (click image to enlarge):

If you select this option, Adwords automatically appends a "gclid" parameter to your destination URLs:

If you already have query parameters in your URL, it will look something like this:


(Note that in the first example, "gclid" is preceded by a "?" and in the second example, it is preceded by a "&". Remember this distinction because it will be important later on.)

What if you're also using a third-party tracking system such as DoubleClick, or your destination URL redirects to a second or even third URL before Adwords users arrive on your site? Will the gclid be retained or get slain?

That depends on the tracking system or behavior of your redirects. This is a very important question to address before you enable auto-tagging.

Some redirects strip the gclid. While Google Analytics still records

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