Here are the most recent two addins:
PermRemovAreasRooms Revit Addin
04-02-2013 PermRemoveAreasRooms2013 (DOWNLOAD for Revit 2013)
RemoveEmptyTags Revit Addin
Just as the name suggests this Revit addin allows you to find and remove empty tags from your Revit 2013 document. You will have two options whether you want to remove empty tags in the active view or in the whole document. You can use it in conjunction with out-of-the-box Revit Tag All tool.
Just posted a PermRemoveAreasRooms tool on my blog as a part of my revit Utils. Little tool that I use a lot when having to delete Rooms / Areas permanently from my revit doc.
Also here's another one(RemoveEmptyTags) that I posted last week:
Incase you find it useful please don't hesitate to share the link with your readers.