52. The method according to claim 50 , wherein the link is presented based on a selection from a list, a combo box, a selection interface or inline controls, an integrated or triggered menu, or via a plurality of interfaces.
50. A method performed by a computing device that includes a memory and one or more processors, the method comprising: maintaining in a first database a plurality of nodes of a social network or a social graph; providing an interface for users of the social network or social graph to share and post content items in one or more communication channels of the social network or social graph; receiving from the user via the interface the content item comprising selected content and instructions for selecting a referenced node; in response to receiving instructions from the user to select a referenced node via the interface, presenting in the interface a list of referenced nodes; receiving a selected referenced node from the list of referenced nodes; sending a link to the selected referenced node; and in response to receiving a user request to share and post the content item, presenting the content item in one or more communication channels of the social network, the content item comprising the link to the selected referenced node, wherein the first database is a partial component of a universal database, where the universal database comprises a plurality of databases, wherein updates to the first database are synchronized in the universal database.