BlackBerry® Messenger is the instant messaging (IM) program that’s unique to BlackBerry smartphone users. You can instantly chat, send and receive pictures, and set your availability status using a familiar desktop IM look and feel—all from your BlackBerry smartphone.
These IM’s are outside your own carrier and run through RIM’s network. One key benefit: if you’re traveling overseas, using BB Messenger will help you avoid International SMS messaging costs.
