This pleases me.
So the wranglers over at the AO3 have, over the last bit-over-a-month, been releasing for public consumption the guidelines that they use to wrangle tags and make canonicals. Now, as they explicitly state on the wrangling twitter, it’s just their internal procedures and shouldn’t stop anyone from tagging in whatever format they want, but it’s really fun to see behind the scenes of the wrangulator to know exactly how the tags arrive in the format they show up in the autocomplete and have (and will again) pop up in the filters.
The guidelines for all but making metatags have finally been released. Links for anyone interested are as follows:
Granted, not everyone may be as enthralled by this stuff as I, but for anyone who is, enjoy. :)