Earlier today BlackBerry launched BBM for iOS and Android. Instead of a download free for all, BlackBerry gave priority to the six million people who registered their email address at BBM.com to be notified when the app became available.
Whether you signed up for the notifications in advance or not, you could (and can) still download and open the BBM app from the iTunes App Store or Google Play. For those on the approved pre-reg database, you could immediately sign in with your email and finish setting up BBM. For those who didn't, entering your email address put you into the waiting line, which is getting approved on a first come, first serve basis (impatient people can try bypassing the lineup with this trick). Definitely annoying for those who didn't sign up in advance and just want to get their BBM action on now, but the good news is the line appears to be moving quite fast.
I registered a few additional email addresses earlier today, and it took only a few hours for the approvals to come in (and they did come in rapid succession, and in the order I entered them). So if you do sign up now, I'm **guessing** the wait shouldn't be too long. Let us know in the comments how long it took it took for you to get to the front of the line!