BlackBerry's (BB 1.50%) stock had its worst day in over a decade after disappointing first-quarter results. The Blackberry 10, which debuted in January, was not a huge hit among consumers. After shipping just 2.7-million new BlackBerry 10 devices in the quarter, few suspected that the company would hit rock bottom. Motley Fool analyst Eric Bleeker discusses Blackberry's loss, what went wrong with the Blackberry 10, and whether the stock is a value play or a value trap.