Ecommerce: See how much money your site is making broken down by day, hour of the day, category, product and customer. See which sites and search engines you are advertising on are bringing in most money. Find out how many orders are coming in from first time customers as against existing customers.
Pages and Activity: View the most popular pages on your site - broken down by category and product. See the average time spent on spent on the site, top exit pages, numbers who added items to the shopping basket and did not buy, even which were the most popular search terms used within the site. View this information broken down for all visitors, first time visitors, returning visitors and existing customers. It's like you are looking over the shoulder of people whilst they are browsing your site.
Referrer: This section tells you how visitors found your site - great for measuring the effectiveness of online marketing. You can see which domains and URL's, visitors were on when they found your site, which of the major search engines your site was found on and even which words were typed into the search engine to bring up your site.
Visitors: shows the number of unique visitors to your site broken down by day and time of visit. Dig deeper and view the number of first time visitors, returning visitors and known customers as well as the number of first time visitors who have bought something and the number of returning customers.
System: measures which browsers (and versions) were used to access your site, as well as the operating systems used (i.e. Windows, Mac, etc), screen resolution and monitor settings. Useful so your web designer can optimize the HTML on your site for your target market.