Method for linking a media work to perform an action, involves linking an electronic media work with a reference electronic media work identifier associated with a reference electronic media work using an approximate neighbor search

A computer-implemented method including the steps of: receiving, by a computer system including at least one computer, a media work uploaded from a first electronic device; receiving, by the computer system from a second electronic device, a tag associated with the media work having a media work identifier; storing, by the computer system, the media work identifier and the associated tag; obtaining, by the computer system from a third electronic device, a query related to the associated tag; correlating, by the computer system, the query with associated information related to an action to be performed; and providing, from the computer system to the third electronic device, the associated information to be used in performing the action.