What is Google Analytics?

Google Analytics (abbreviated GA) is a free service offered by Google that generates detailed statistics about the visitors to a website. Its main highlight is that the product is aimed at marketers as opposed to webmasters and technologists from which the industry of web analytics originally grew.

GA can track visitors from all referrers, including search engines, display advertising, pay-per-click networks, email marketing and digital collateral such as links within PDF documents.

Integrated with AdWords, users can review online campaigns by tracking landing page quality and conversions (goals). Goals might include sales, lead generation, viewing a specific page, or downloading a particular file. These can also be monetized. By using GA, marketers can determine which ads are performing, and which are not, providing the information to optimise or cull campaigns.

Your users are going to love this one. If they have a GA account (which they can get for free from Google) they can enter their assigned code via their store, and can monitor the traffic to their store, as well as their auction listings.

You as the admin can restrict its use only to stores which are defined as 'featured' allowing you to provide yet an additional service to your users, enticing them to go with your "premium store levels" hence allowing you to generate more revenue for you site, while allowing your users to have more "control" at the same time.