Sites like ReviewGist are great for consumers but not so great for gadget bloggers. By collecting a number of reviews and adding on meta-date like price and features, they automatically create collections of data what are actually quite useful when shopping and, unlike something like Amazon.com, offer more in-depth information than standard user-generated reviews.
ReviewGist is similar to Wize.com and Compete but the creator, Nishant Soni, says:
Our scope might seem similar to Wize.com but we analyze reviews much deeper and try to understand what aspect/part of the product is the reviewer rating good or bad. This deeper semantic analysis then enables our rating algorithms, product comparison and recommendation tools.