Buzzillions is a user-generated product review site. It gets its reviews from its partner site PowerReviews, which provides customer review software to ecommerce sites. It also incorporates product reviews from companies who use other 3rd party providers or have an inhouse review system.
They provide you with all the tags given to a specific product including tags for pros, cons and best uses. They even provide you with the count for how many times each tag was chosen.
Buzzillions has an interesting business model in that they sell traffic, or product leads, from Buzzillions right back to the merchant network that uses PowerReviews, on a CPC or CPA basis.