1. A computer-implemented method comprising: receiving a request from a particular user to view one or more online reviews; in response to receiving the request, accessing a plurality of reviews generated by a plurality of review authors; determining, using one or more hardware processors, a similarity of one or more of the review authors to the particular user, based on at least one of a user preference profile of the particular user and a connection of the particular user on an online social network; sorting the reviews, based on the determined similarity of the one or more of the review authors to the particular user; and providing the sorted reviews to the particular user.