devu

Instead of manually update your Facebook status / Fan Page Wall / Twitter with every new post you publish on your blog, this plugin does it for you.
The plugin requires Php4 or higher, Curl and Json libraries.
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More information & support: http://www.francesco-castaldo.com/plugins-and-widgets/fb-status-updater/

Status Updater

If you have a Facebook profile or page or a Twitter account, this plugin is what you need to connect them with your blog! When you publish a new wordp …

Nordvind

Puts a “wall” into a blog, where blog authors can chat. Wall can be hidden from unregistered users. 
Intended to use in community/corporate blogs, for coordination between authors.

Status Updater vs MBlog