BlackBerry shares dive on reports of muted U.S. debut for Z10

By way of Euan Rocha TORONTO (Reuters) – Shares of BlackBerry fell virtually eight percent on Friday after stories of a flat response to the launch of its new Z10 smartphone in the vitally necessary U.S. market. The neatly-reviewed instrument, whose success is crucial if BlackBerry is to reestablish itself as a power in the smartphone trade, ultimately hit U.S. retailer cabinets early on Friday, virtually two months after being formally unveiled. A number of analysts and media studies discovered the debut lackluster. …