Joan Blades (b. ca. 1956 in Berkeley, California) is an American businessperson and liberal political activist. In 1987, she and her husband Wes Boyd co-founded Berkeley Systems, a San Francisco Bay area software company known for marketing the After Dark screensaver and the You Don't Know Jack trivia game. After selling Berkeley Systems in 1997 for $13.8 million, Blades and Boyd founded the liberal political group MoveOn.org. Blades received...
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