18. A computer-readable medium having instructions encoded thereon, which, when executed by a processor, cause the processor to perform operations comprising: receiving a plurality of online content items authored by a plurality of authors for online publication; and for each online content item, determining a reputation score for an author of the online content item, where the reputation score is based at least in part on: (a) reviews scores of the online content items authored by the author, the scores provided by one or more reviewers other than the author; and (b) an authentication score for the author, the authentication score being a function of determinations made to identify that the author is who the author purports to be and in response to a query for online content, generating a set of search results including an online content item from the plurality of online content items; and determining a ranking of the online content item in the set based at least in part on a reputation score of the author.
30. The computer-readable medium of claim 18 , wherein the reputation score is reduced if the author is determined to have included plagiarized content within the online content item.