Messenger Stuff discovered Windows Live Messenger is now also available for the BlackBerry:

Now Windows Live Messenger is compatible with the current leader in smartphones, the BlackBerry.

…The client in simple and lightweight, but like the BlackBerry’s user base, is designed for productive users. All in all this is a simple application, but if you’re a Blackberry user, who natively uses Windows Live ID, it is a must.

Download Windows Live Messenger for the BlackBerry

News source: LiveSide.net

Unfortunately I could not get this to install on my Blackberry 8800 at this point in time. Maybe when 02 release the long overdue 02 certified firmware upgrade I could get to install this.