If you own a BlackBerry, it might not have been immediately apparent that Facebook Messenger has been an option since October; unlike with Android or iOS, you had to track down the download on Facebook's website. We don't know why it's been kept out of a more accessible channel, but that ends today with Facebook's chat-focused app arriving on BlackBerry App World like most any other title. There don't appear to be any new tricks included with the expanded availability, although we'd say that the wider
