Hi there. I’m looking into how useful/reliable returning visitors stats in Google Analytics are over longer periods of time, such as two or three years.
It seems that the __utma cookie is set to expire 2 years from set/update, so this suggests that this cookie should be updated each time the user visits the site, and the 2 year expiration reset.
Would I be right in thinking then that it’s reasonable to expect the returning visitors data to be worthwhile over 2/3/4 year periods?