I came across this training video about how to use Managed Metadata in SharePoint 2010 from the Microsoft Developer Network site. This is a 20 minute video and worth watching from anybody who is doing content management inside of SharePoint 2010.
A few key highlights:
- Ability to define and share content types enterprise wide from a single site collection. Local content types can still be created and can inherit from enterprise content types.
- Browse and filter content inside of document libraries using the taxonomies with the metadata navigation features. This can help eliminate the need for folders in SharePoint 2010.
- Ability to create managed term sets at the site collection level when adding a new managed metadata column to a library
Overall, this is a great primer.