11. A server comprising: a processor to execute instructions stored in memory, the instructions, when executed by the processor, to cause the server to: monitor for and detect a user-initiated interaction associated with a web document by a user, the web document having a Universal Resource Identifier (URI); identify one or more topics to which the web document relates; in response to identifying a single topic to which the web document relates: identify a single, existing forum of potential interest to the user, the single, existing forum being associated with the identified, single topic; and recommend the single, existing forum of potential interest to the user; and in response to identifying more than one topic to which the web document relates: identify more than one existing forums of potential interest to the user who initiated the interaction with the web document, each more than one existing forum being associated with at least one topic selected from the identified more than one topic; identify a plurality of persons to whom the user has a relationship with, as defined by the social network service environment; determine which of the existing more than one forums to recommend based on activities of selected ones of the identified plurality of persons; and recommend the determined one or more forums to the user.
15. The server of claim 11 , wherein the user-initiated interaction with the web document having the URI is any one of: the user viewing the web document; user submitting the web document to the social network service; the user sharing the web document with another user of the social network service; and the user providing a comment on the web document.