Google Analytics is a very useful and free tool for tracking site statistics.
This plugin puts new Google Analytics Async code into your page source code automatically. You need just to install and publish the plugin.
After enabling it with your personal analytics ID you can monitor your site parameters such as visitors, visitor countries, search queries and bounce rates and many others in your Google Analytics account.
For getting your personal google analytics website ID and more information about Google Analytics visit: http://www.google.com/analytics/
Download Union Google Analytics 1.0 for Joomla 2.5, 1.7