RIM has made Facebook for BlackBerry, version 2.0, available via its BlackBerry Beta World portal. The latest update includes support for Facebook Chat and messages — which will now automatically land in your unified mailbox. Provided that you leave yourself signed in, the app will automatically notify you of new chat messages, even if you don’t have the app open. We can’t tell you how many times we’ve accidentally “Liked” a random friend’s status while scrolling throug...