1. A computer-implemented method comprising: receiving in a search system a query from a user; identifying members of a social affinity group of the user, the social affinity group having members having a relationship to the user; receiving search results responsive to the query from a search engine, the search results including search results that reference resources associated with members of the social affinity group; identifying one or more words of the query; comparing the one or more words to one or more social network names included in a list, each social network name associated with a social network site; based on the comparing, determining that at least one of the one or more words matches a particular social network name of the one or more social network names, the particular social name associated with a particular social network site; in response to the determining: identifying among the search results a first search result that references the particular social network site, identifying among the search results a second search result that references a resource that is found on the particular social network site and is associated with a member of the social affinity group; and generating, for presentation to the user, a response to the query, the response comprising instructions that the first search result be presented in proximity to the second search result.