1. A method comprising: processing a search query initiated by a searcher to identify a set of member profiles satisfying the search query, the set of member profiles corresponding to a set of members of a social networking service; assigning a ranking score to each member profile of the set of member profiles based on a ranking criterion; identifying a subset of the set of member profiles based on a determination of an overlap between a work history specified in each of the subset of member profiles and a work history specified in a profile of the searcher; adjusting the ranking score assigned to a member profile of the subset of the set of member profiles based on the determination, wherein the adjusting of the ranking score is performed by a processor; and communicating, for presentation as search results in a search results interface, a portion of each of the set of member profiles satisfying the search query, the search results positioned to reflect the ranking score assigned to each of the member profiles of the set of member profiles, including the adjusted ranking score assigned to the member profile of the subset.