As much as we struggle to keep BlackBerry alive in our feeds, the company isn't doing the best job in helping us reach that goal. BlackBerry is more of an uncertainty than it is the aspiring line of products that most of us drooled for in the past. That said, BBM has been doing a decent job in gaining some cross-platform glory, and the next frontier is Windows Phone. The company recently launched BBM beta for Windows Phone devices, but as a closed beta for only a few. Today BlackBerry has launched BBM as a public beta for Windows Phone 8 and Windows Phone 8.1 devices and the list of ...