Gogole Analytics will provide free hosted Web analytics service that businesses can use to track the effectiveness of online marketing campaigns
Some highlights of this service are:
– Free Service
– Learn how visitors interact with your website
– Identify the navigational bottlenecks in your site
– Finding how profitable your keywords are across search engines and campaigns
– Pinpoint where your best customers
– Easy-to-understand visually enhanced reports
– Available in different languages
– Integrated with Google AdWords
Google Analytics
http://www.google.com/analytics/