I just read the tag FAQ and it didn't seem to make clear that tags should be unambiguously meaningful. I would suggest that a "good tag" be one that you could write a tag wiki excerpt for (and not just copy a definition out of a dicitionary).
This was prompted by clicking on the level tag and seeing that there is no useful definition of it. Same for:
admin issues item not-working (duh!) next (would have been a great tag 20 years ago!) separate from (seriously?) repeated ideas arrow moving deleting project (who's not working on a project?) line change part riddles
Am I wrong here? Are these good tags?