Exhibition Kits is a Drupal 6 site with Ubercart and is highly optimised for SEO. It uses all the built in SEO features of Drupal, plus a number of modules to ensure that the site doesn't fall in the search ranking in a very competitive area for search results.
One of the key factors was to ensure that the site didn't fall in the rankings when migrated over to Drupal, and we used a variety of techniques to ensure that it remained competitive
