Not sure where to go with this:
Artist Butaneko (ブタネコ, http://www.pixiv.net/member.php?id=3744115, id fa27583) has at least one image on this site that I'm aware of. See post #1042471.
However a different artist named butaneko (豚猫, http://www.pixiv.net/member.php?id=128444, id butaneko3939) has this artist tag in use already.
Okay, so I figured just use the ID in the image URL: fa27583, but no, that's not descriptive and I think I remember we quit tagging artists with artist_name_(user_id) a while back.
So what's the best way to accommodate both artists?