What is it good at?
It is basically a fantastic analytics suite for free! Dominates in terms of market share in the Analytics tools market. Immediate integration with Google Adwords and Google Adsense
Small to Medium size businesses
How is it used?
Provides website traffic analytics and reports (click stream reporting). Very comprehensive suite of standard reports immediately provided with the capability to add custom reports, set up and track campaign goals etc.
What do you get?
Product (free sign up), plus online guides, webinars, Google Online Analytics University etc.
(All above at July 2012)