For many marketers, it is hard to remember what life was like before Google Analytics. So profoundly useful, few will recall that it was just two and a half years ago that the service arrived on the scene, providing free tracking to anyone who knew how to copy and paste code. Last year, a major update added multiple bells and whistles, including an easy-on-the-eyes interface and scheduled reporting. And most recently, Google Analytics launched a data sharing and benchmarking service.