Good news! BlackBerry has finally figured out how BBM will pose a threat to messaging giants like WhatsApp. It's... stickers. Yes, of all the things the company could do to improve its chat app, it's introducing the same sort of purely cosmetic decals that everyone else offers. As with rival services, those using a new BBM beta can buy themed sticker packs to express themselves in creative (and very cutesy) ways. In all fairness, the addition may help BlackBerry court younger chatters. However, we hope that the phone maker has a lot more up its sleeve than this -- me-too upgrades can only go so far.