Urchin WebAnalytics Software is discontinued and is no longer supported. All Urchin documentation applies only to the Urchin product as it was at the time of discontinuation, and does not apply to any Google Analytics products or services. Overview The patent-pending Urchin Traffic Monitor (UTM) available in Urchin 4 was specifically designed to provide the most accurate measurements of unique web
![Urchin Tracking Module (UTM) - Urchin Help](https://cdn-ak-scissors.b.st-hatena.com/image/square/95d258bac2418138265c758f2ce41d4937ff8459/height=288;version=1;width=512/https%3A%2F%2Fwww.google.com%2Fanalytics%2Fhc%2Fimages%2F%2Futm_proxy.gif)