Weird. I'm more-or-less sure about Valkyrie being the past default. At one point I discovered with dismay that Century Supra was used instead, for me. But now, I even checked in a private window before posting the above comment, and it was Valkyrie again.

Perhaps the font is selected quasi-randomly depending on the visitor's ip. Anyway, I stand by the word that Valkyrie is the best for the site.

(Also the mobile version seems to have lost the font switcher, so there's a chance readers on their phones don't and can't get the Valkyrie experience.)