"tagme" is there for people that actually feel like browsing through it and updating the tags.
Xbooru just got half a million tags added as stated here:
xbooru.com/index.php?page=forum&s=view&id=186 . tagme is not there because we want it to be, it's there because we can't go through every single image and tag it manually.
With that being said I also can't ban people for not tagging properly. I sure as hell will ban them for sabotaging tags but not for just not tagging.
Alaron,
Xbooru Admin