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From the page: "Initial Referrer: The missing metric in Google analytics
June 9th, 2008
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Google\'s missing metricWhen it comes to tracking your marketing efforts it is important to consider the number of ways prospects will come into contact with your marketing collateral. The idea (sometimes known as multi-touch marketing) is that most of your prospects will not convert the first time they come into contact with your products/service, but are likely to be exposed to multiple messages via the corporate website, a banner ad, word of mouth et cetera.

Tracking multiple touches in Google Analytics is easy and they offer many ways at refining the data to get a clear picture of the different mediums prospects are using to visit your site, with one exception, the conversion. Google has decided that the last touch, the source that turns a prospect into a customer (or achieves a goal) is the touch that should get credit for the conversion. Which works out pretty good in most cases except it doesn�t factor in human behavior and the use of Search Engines.

The problem:

Say someone is looking for a waterproof video housing. They launch their favorite search engine (proabably Google) and type in the search term �oewaterproof video housings.” They see organic results and a Google ad (CPC) in the search results page catches their eye. They click it find a website called �oeEpic Camera housings.” They spend some time on the site doing a little research and leave. The next day they decide to go back to that �oeEpic Camera” website but they can�t remember the domain name. They fire up their search engine again, but this time they type in the name of the company �oeEpic Camera Housings.” They see the website they were looking for in the results page, they click on it, make a purchase and live happily ever after.

One problem, when the eMarketer is analyzing the conversion data for the campaigns he doesn�t see that the Pay-Per-Click (CPC) campaign was involved in that transaction. In fact many of the campaigns that were involved in the multiple-touch process of converting a prospect into a lead look like failed campaigns because they appear to not be converting.

What you would really like to see is the first source of a visit to the website and the last source.

The Solution:

A few individuals have created JavaScript to capture the initial referrer and add it to the User Defined field in Google analytics. The one that I like the best was present by Brian Clifton in his book, advanced-web-metrics, as it offers more flexibility in the data you can capture to the User defined field. There were a few errors in the code so I am presenting a corrected version here for you to use until his page gets updated: Initial Referrer source code

Just replace your current Google Analytics tracking code with this and make sure to change UA-12345-1 to your actual code.

You should start seeing data appearing in Google Analytics under Visitors/User Defined.

Let me know if you find this kind of article helpful and if you have any questions."