Buzzilions is a web 2.0 e-commerce site that has just re-launched under a new name that now offers some great new features similar to the ones you might find on E-bay or Amazon.
They offer advanced search options beyond category, brand and price and have also input pros, cons, and best uses. This is all based on user generated reviews, so you can use their Affinity Recommendation Wizard to locate all the best products in your field of interest. The site helps you find and compare products, and find reviews from satisfied (or-not-so) costumers.
Buzzillions.com In Their Own Words
“Use our Affinity Recommendation Wizard in select categories to help you find products recommended by people like you, for the specific use you want. So whether you are an enthusiast photographer looking for the best lens for night photos, or a stylish shopper looking for the right casual shoes for travel, our Affinity Recommendations can help you discover the best products recommended by people just like you.”
Some Questions About Buzzillions.com
Who can submit a review? Do you have to be a registered user? Will they add a mobile interface, like other buyers and sellers sites? 
