Recently, Google Ads announced changes to improve the user experience when a Google ad is clicked. As a result, they are changing the format of some referrers that come from Google Ads. The changes will go fully into effect at Google Ads during August, 2012. The old format of the affected referrers look like one of the following:
Now a third possible format is being introduced during July and August:
Webtrends On Demand made a change on July 17 to recognize the new format as search engine “Google Ad Services”, while the previous example formats shown above will still be recognized as search engine “Google”.
We will continue to monitor updates in this area.