Lemme check! I can't remember if I set tags to mod-only or to poster-enabled, but I'd be happy to make sure people can natter if they want. (I know that I'd like to keep a consistent tagging system so people can search by canon, meta/fic/art, etc, but that can totally be done in addition to tagnatter. You get 1000 tags for a comm last I checked, and we're not gonna run up against that limit any time soon.)

Edit: Okay, I think it's set so that anyone can tag an entry whatever they want. If you can't, let me know! I've stuck an asterisk on the front of the categorization tags, and I'll edit the profile when I get a chance to say something like "please use the categorization tags, or your mod will come along and add them (which she doesn't mind doing!), but feel free to add whatever other ones you want too.")