More on Web Stats Tool

Google Analytics (GA) is a free service offered by Google that generates detailed statistics about the visitors to a website.

Most important, a webmaster can define and track conversions, or goals. Goals might include sales, lead generation, viewing a specific page, or downloading a particular file. By using this tool, marketers can determine which ads are performing, and which are not, as well as find unexpected sources of quality visitors.

Google's service was modeled upon Urchin Software Corporation's analytics system, Urchin on Demand (Google acquired Urchin Software Corp. in April 2005). Google still sells the standalone installable Urchin software through a network of value-added resellers.

Google has been working to improve system performance, and reports now generally update in less than one hour. All users can officially add up to 50 site profiles. Each profile generally corresponds to one URL

As per the technology part of it, Google Analytics is started by including JavaScript on each page the user wishes to track. This JavaScript loads larger files from the Google web server and then sets variables with the user's account number. The GA report interface checks for the presence of this script on a tracked site's homepage, and warns should it not be available.

Read More here: Google Analytics A useful tool
And Also read this: Google Office for MS Office Tools in the Internet Marketing Blog