There is a module called VirtuMart all-in-one that has most viewed products.
Top seller is a virtueMart module called top 10.
Now the "track" verb in the E-Marketing means that you can see where your users come from when visiting your site, where did they go, how much time they spended on your site, on a specific page, and so on. This job is well done by a GoogleAnalytics TRACKING Module. This can be a component for Joomla only, and a module for VirtueMart. At this moment there is no solution for VirtueMart 1.1 , only for VirtueMart 1.0.
Greeting from VirtueMart Planet