I don't want to create too many labels, but I would certainly be willing to add labels that folks would find useful, especially if they would help identify the sites that should be tagged with a particular label.
Another label that folks might find particularly useful are the sites tagged with UUA. The sites tagged with UUA are all the blogs that are maintained by the UUA, UU World, etc. Especially for folks that are webmasters this might make a great feed to include on a church's or districts home page if you don't want to include them all.
If you have any suggestions for other labels please feel free to comment.