There is described a method implemented on a social search server for presenting names of members of a social network who shared information about a commercial item 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; extracting commercial items from the indexed activity data; receiving a search query along with a user identifier; identifying a commercial item within the search query; using the search query and the user identifier, performing a search on the extracted commercial items specific to the user's connections to obtain names of members who shared information about the commercial item; and returning the names of the members who shared information about the commercial item to the user device.