When I got the news that google has a website traffic analysis service Google Analytics, it’s too late for me to get the free service work on my blog. Because it has experienced extremely strong demand since google released this product and the sign-up has been closed alrealy. It’s so bad and I had to search for other tools to observe the traffic statistic of my Blog. Until now I have used 3 products: extremetracking, AXS and now Performancing Metrics.Although each of the 3 has both its and advantages and disadvantages, I prefer the last one, Performancing Metrics.