title: Sharepoint 2010 - "Tags and Notes" not active
body: <p>I have installed and configured SharePoint 2010 and am now testing using it.
  I can't seem to add a tag to anything. I can choose a specific item (such as a task), but the "Tags and Notes" button is disabled. When I hover over the button, it says I may need permissions in order to tag an item, but I'm the site admin, so I doubt that is the problem. Is there a setting that I need to enable, that will allow tagging?</p>