Google has confirmed that page load speed is one of the 200+ variables that contribute to the Search Engine Results Page (SERP). While there are a number of sites that will tell you how fast your site loads to your location, it would be nice to see how long it takes your site to reach your customers. In addition, once your site gets past a few pages, tracking the load speed of each page become a REAL PAIN.
Google Analytics Site Speed metric has changed that.