9. The method of claim 6 , further comprising: receiving, by the at least one computing device, a user selection of a third item of content of the first service; determining, by the at least one computing device, a different fourth item of content of the different second service based at least in part on the third item of content; and updating, by the at least one computing device, the interface to indicate at least some of the plurality of items of content associated with at least some of the plurality of services including the third and fourth items of content and the first and second services.
11. The method of claim 9 , wherein the interface is arranged to simultaneously indicate both the first and third items of content.