27. The computer-implemented method as recited in claim 21 , wherein the media item comprises an electronic book stored on an electronic book reader device of the user, and the sending at least a portion of the media item from the server comprises sending a sample of the electronic book from the server to the individual content rendering devices.
27. The computer-implemented method as recited in claim 21 , wherein the media item comprises an electronic book stored on an electronic book reader device of the user, and the sending at least a portion of the media item from the server comprises sending a sample of the electronic book from the server to the individual content rendering devices. 29. The computer-implemented method as recited in claim 27 , wherein the user that requests to share the electronic book designates a location of the sample within the electronic book.