If you ever needed an application that demonstrated the power of Facebook applications this is it.  I found this through Scobleizer and am excited at the potential.  The application is called Google Reader Shared Items.

The idea is you subscribe to all of your favorite RSS feeds in Google Reader. As you find items that you think are interesting you mark them as shared. The Facebook application lists your shared items and all your friends that are linked to you and have installed the application can see your shared items. You can also see all of your friends shared items.

Leveraging existing applications to stimulate conversation. Now take that one step forward and make sure that you subscribe to your friends blogs and via blog posts, trackbacks, and comments information relevant to you and those in your network flows well.