Google's $35 plug-and-play Web streaming device sold out within minutes of hitting store shelves on Friday, and observers say the appearance of Chromecast alongside existing devices such as Apple TV is one more nail in broadcast TV's coffin. The USB-sized Chromecast plugs into a television's HDMI port and offers streaming from a number of mobile devices or a computer at a fraction of the cost and with fewer wires than comparable devices.

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