Google Instant Preview scheint die Google Analytics Daten zu verfälschen. Habt Ihr das auch schon bemerkt?
Google Analytics Data Skewed Because Of Instant Previews
It appears that in some cases Google will conduct an on-demand fetch of your page to dynamically create an Instant Preview. The on-demand fetch happens when a searcher places his mouse over the search result on Google and the image preview comes up. Some analytics tools, including Google Analytics, may consider that a visit, because Google Instant Preview is actually visiting the page in real-time to get that on-demand Instant Preview.