You might think that Facebook's acquisition of WhatsApp for $19 billion suggests that BlackBerry is sitting on a gold mine with its BBM messenger service.
Well, not so fast.
Facebook shocked the market on Wednesday with the purchase of messaging app WhatsApp in a deal that included $16 billion in cash and stock, and another $3 billion in restricted stock that would vest over the next four years.
The deal set a new, much higher benchmark on the valuation of mobile messaging companies. Based on the $19 billion figure, Facebook acquired WhatsApp for $42 per monthly active user (450 … Read more