Our tags are a mess: many questions are tagged wrongly, and many tags are too similar or meaningless.
Some time ago, I cleaned up the tags wordpress.com and wordpress.org. Since then I check those tags regularly for new questions and remove the tags if they weren’t used properly.
Now I ask you to do the same: pick two or more related tags (for example jquery and jquery-ui) and help us to improve our site over time.
There isn’t much to do after the initial clean up. Keep an eye on the tag wiki, and make sure new questions are tagged properly. When you see two tags which should merged, open a new topic here or suggest the synonym.
Name the tags in your answer, so we know which are taken already.