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Geekolinks: 4/21

Researcher: iPhone location data already used by the cops (GigaOM)

Robot tosses the first pitch at Phillies game (SportsGrid)

Tetris Heaven becomes a reality (Gud)

After ‘Black Friday,’ online poker faces a cloudy future in America (FiveThirtyEight)

Gaming’s most difficult decisions (GamesRadar)

This is terrifying (TDW)

Heavy metal covers of video game music (Joystick Division)

(title pic via Best Roof Talk Ever)

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