Not a ton, but can be very useful to those using Linked in a lot.
It shows messages sent and received on Linked In in your “People’s Pane”. (Bottom area of your reading pane.
Download the free plugin here.
If you exchange an email with a facebook “friend”, then their updates will show up in your Peoples’ Pane.
You can add them to your facebook friends from Outlook.
Download for free here: