After wandering arond the danbooru wiki, I found this wiki page: http://danbooru.donmai.us/wiki/show?title=solo, which talks about a charactertagcount metatag.
After some searching on the forums, I found that it was a usable metatag around 6 months ago, and that you have to use it like order:score, rating:s and stuff.
However, I don't get any results if I use it. I've tried various ways to enter it in the searchbox, but I only get to see chickens. (I've also tried artisttagcount, generaltagcount and copyrighttagcount)
I haven't found anything like that this tag has been disabled, removed, or that it is an mod-only thing.
So, assuming that this tag still exists and works, how do I have to use it?
Updated by Log