PHP-hispano.net

Here’s an example. A visitor visits your site from a newsletter with tagged links. They look around and decide to leave. When they leave your site the campaign tracking cookie will persist and indicate that they originated from the newsletter.



The same visitor decides to come back the next day and types your URL into the browser. The campaign cookie will still indicate that the visitor arrived via your newsletter because the second visit was a direct visit, and direct traffic does not overwrite existing campaign information.



With that all said, you can configure GA to NOT overwrite the campaign data that is stored in the tracking cookies. This let’s you identify the first campaign that brought the visitor to your site. Here is the link:



http://www.google.com/support/analytics/bin/answer.py?answer=27247

Here’s a brief outline for what the JavaScript does:



* When visitor lands on the site check the previous referral information.

* If there is no previous referral info then gather the referral info and store it in a custom segment using utmSetVar()

* If there is previous referral info, then UPDATE the custom segment to include the current referral information