http://www.chokertraffic.com/sample/
Whenever a potential buyer says "I use google analytics" I cringe, and for good reason. It is not accurate. PERIOD. But because it's a google product most people assume it's 100% accurate. I mean google has the Midas touch right? WRONG WRONG WRONG
This test is ongoing so I will post more results as tests are completed. My tests show about 15% loss in traffic but I know of people who commonly lose 30% or more. I'm thinking some sort of Java script interferes with GA. Anyone out here had any exp with this?