16. The method of claim 13 , further comprising: determining a context in which the user performs the selection of the content item, the context including at least one of geographic location of the user, day, date, and time; associating the context of the user selection with the adjusted relevance weighting of the selected content item; receiving subsequent input entered by the user for identifying desired content items; in response to the subsequent input entered by the user, selecting and presenting a subsequent subset of content items to the user as a hierarchy of content items browsable by the user, wherein only the adjusted relevance weightings associated with the context in which the user enters the subsequent input are used in the selecting and presenting of the subsequent subset of content items.
19. The method of claim 16 , wherein at least one of the input and the subsequent input are entered by the user on at least one of a telephone, a PDA, a computer, and a remote control.