There is described a method and system for obtaining ranked search results including names of experts who are members of a social network and presenting the ranked search results to a user performing a search from a user interface of a user device. The user is registered on the social network and has connections thereon. The method comprises: indexing data representative of activities of the members on the social network to produce indexed activity data; receiving a search query relative to a subject along with a user identifier from the user device; using the search query and the user identifier, ranking members from the user's connections based on their activities on the social network related to the subject to obtain ranked experts for the subject; returning the names of ranked experts for the subject to the user device for presentation on the user interface.