> PBS is "public"; I don't know if that means they just rely on donations or if they also get tax support. If they do, they're certainly the exception, and all they ever really show on there is educational programming and old British sitcomes anyway.

Both PBS and National Public Radio receive some tax money, if I recall correctly. These days, however, they are largely supported by corporate sponsorship as the level of government contributions has declined fairly steadily. They are also supported by viewer donations, which leads to PBS' infamous "pledge drives."

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