It seems Facebook and RIM has teamed up. RIM now has a Facebook application for the Blackberry phone. Now if you are a Facebook user and own a Blackberry, you can access all the goodness of the site on the go.
With the Facebook application for your Blackberry, you can access all of the core functions on the site as easy as you would check your email or any other area of your Blackberry. You can receive notifications and messages automatically, change your status, upload photos directly from your Blackberry, add friends, write on walls, view the status of friends, and reply to messages even while offline.
If your interested in this application and your a Facebook user, you can download the app here: http://www.blackberry.com/facebook/mobiledownload