NPR CORRECTION: Several readers wrote to point out that NPR is not, in fact, listener-supported, as this page admits: “NPR’s annual revenues come primarily from member station dues and programming fees, contributions from private foundations, and corporate underwriting. A long-standing board policy prohibits NPR from soliciting listeners directly: on-air fund raising, direct mail, and telephone solicitations remain a prerogative of member stations.” Looks like their biggest fans are corporations.