I've finally upgraded Joomla Ratings to jReviews 2.0 and gave the site a much needed facelift. I removed thousands of old pages with the hope of making this an organically grown Joomla user site, and even if it fails, at least it's another jReviews showcase

I am using a single section and category and several listing custom fields as virtual categories. When you visit the homepage you'll see the at the top a round grey box with the search field and the virtual categories from a custom field. This is a fields module modified to show the search form as well. When users submit new listings they can add new virtual categories and keywords on the fly.
If you are starting your Joomla site now, make sure to stop over
http://JoomlaRatings.com, review a few extensions or providers and add your own.