Since there is not voting or reputation system I doubt you'll allow people to create tags anytime soon. So I wanted to suggest some more to add to the current list:
Controllers Models Core Artisan Command-Line Feedback Forum
That's all I can think of right now.
Also as the number of tags grow, I would consider instead of having a big list of clickable tags, just have a field that you type in and it fills in the tag name for you, similar to SO. Chosen is pretty solid at stuff like this: http://harvesthq.github.io/chosen/
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