Where television luridly reveals everything, radio is coy; radio conceals its sources. It is a voice behind a curtain, and you must provide the face. Or, if you do not keep your radio behind a curtain, as I do, you can imagine it as voices in the next room. This is what makes radio so powerfully consoling to the lonely — it creates the illusion of company in a way that few other media can.
— John Hodgman in The Transom Review