Another issue is that an individual can find value in reviews written by people they disagree with. For example, there used to be a film critic whose tastes were almost diametrically opposite mine. If he bagged a movie, there was a pretty good chance that I'd enjoy it. But under the scheme covered by the patent application, if he wasn't very good at predicting the audience, his reviews would be buried: "The system presents in the electronic store received feedback from at least one individual whose predictive ranking coincides with the actual ranking of the item". So that doesn't help me.
It seems to me that the method set out in this patent application would motivate reviewers to 'think average' rather than 'think different'.