OK, this is progress. It looks like an old plugin–Chemicalize, which was a novelty script that automatically added chemical formulas whenever I’d type the name of a particular substance, was causing a 301 error. Weirdness.
But that’s what happens when you’re trying to figure out the quirky errors made by 2012 You.
Testing the comment here. Hey, you’re terrible and what you try to do is awful.
That’s about right.