A Facebook "wall" type plugin for WP

I am looking to find a sort of Facebook style wall plugin for WordPress to replace my existing Shoutbox.

I currently use a really simply AJAX shoutbox script for my registered users to chat on. What I would like to be able to do is to add the sort of functionality FB has with uploading images, sharing links, etc.

I know this can be done by comments (and is done by my users) but I thought it might be nice if a user wanted to share a single photo or link, they could post it to this particular “wall” on my blog.

Does anyone know of a WordPress plugin that can do something like this?