SharePoint Server 2010 Communities Features
SharePoint Server 2010 enables colleagues to connect in ways that are second nature to them.
Stay informed on your colleagues updates, and track certain activities in your My Site website. View a live feed of colleague activities with "My Network" and ask questions about interests or expertise using the "Ask Me About" feature.
Use tag profiles to see what people have been utilizing in the organization and subscribe to a feed of any tag.
Post status updates
The new status updates in SharePoint Server 2010 feature micro-style blogging to keep your network up-to-date on your activities. The overview feature includes a Facebook™ inspired "wall" interface.
Blogs, enterprise wikis and more…
SharePoint Server 2010 also includes all of the Communities Features from SharePoint Foundation 2010. Foundation 2010 Communities Features
SharePoint Server 2010 Claims Health Monitoring
SharePoint Server 2010 Composites Features