1. A method comprising using electronic systems to acquire items of audio, video, or other media, or other data, or other content, in geographically separate acquisition places, using a publicly available set of conventions, with which any arbitrary system can comply, to enable the items of content to be carried on a publicly accessible network infrastructure, providing, on the publicly accessible network infrastructure, services that include selecting, from among the items of content, items for presentation to recipients through electronic devices at other places, the selecting being based on (a) expressed interests or goals of the recipients, to whom the items will be presented, and (b) variable boundary principles that encompass boundary preferences derived both from sources of the items of content and from the recipients to whom the items are to be presented, the variable boundary principles defining a range of regimes for passing at least some of the items to the recipients and blocking at least some of the items from the recipients, delivering the selected items of content to the recipients through the network infrastructure to the devices at the other places in compliance with the publicly available set of conventions, and presenting at least some of the selected items to the recipients at the presentation places automatically, continuously, and in real time, putting aside the latency of the network infrastructure.