We have a lot of leftover clutter from early beta, but what I notice primarily is the incredible number of unused tags. Can I get a few people to view the tag list and nominate a couple dozen unused tags here? Once we all agree on what should go, we'll burn 'em. Make sure to look at tags with only one question attached.
Tags not associated with any question are automatically destroyed at 03:00 UTC every day.
I believe most of the unused tags in the end of the tag list are actually just tag synonyms for existing tags.