For all of you BlackBerry owners, I'm sure you're well aware of BlackBerry Messenger (BBM). Basically what it is, is IM right on your phone in real time. Unlike SMS, messages are free since they are sent through RIM servers, just like email. Now here comes the fun part: When you send a message, you'll see a D beside it to let you know that it was delivered. And as soon as the recipient reads the message, an R will appear (to show it has been received). Therefore, with BBM, it becomes impossible to ignore messages since the sender will know if you got the message but aren't responding. On yesterday's Live With Regis and Kelly, Bromance star Brody Jenner mentioned how his love affair with his girlfriend started with BBM. Are you a BBM user? What do you think about its revealing features?