Who would have thought that BlackBerry users -- those professional mobile workers who never leave home or their office without their handy communications device -- would be social animals?

Yes, we know they're email aficionados who understand the value of never not being in touch, but I never would have guess they'd break records when it came to social networking activity.

But that's exactly what's happened since Crackberries got their hands on a MySpace application just a little over a week ago.

According to Research in Motion, the BlackBerry maker, 400,000 users have downloaded the software -- which RIM said represents an all-time high for both MySpace and RIM in terms of first week application downloads.

In just eight days users collectively sent and received more than 15 million messages and updated their mood and status over two million times in the first week.