11. An apparatus, comprising: a database of reviews containing user-author information; and a review retrieval system that selects one or more reviews from said database of reviews responsive to a review request for a first reviewed subject, wherein said review retrieval system calculates one or more social distances between each user-author of said one or more reviews and a requesting user making said review request and sends said one or more reviews sorted responsive to said one or more social distances for presentation to said requesting user.
17. The apparatus as recited in claim 11 , wherein said review retrieval system further generates filtering information related to said one or more social distances between said requesting user and each user-author, and further wherein said review retrieval system provides reviews based in part on said filtering information.