I left Firefox and viewed my page in IE and it was still there. I refreshed the page in Firefox and it went back the normal ad links. Luckily I had the good sense to make a screenshot of it.
I did a search on “Google View Ads About” and it turned up some paltry results. Apparently it’s been around for quite some time. The general thesis is that it shows up when there aren’t enough relevant keywords to generate an ad.
That sucks… Gotta get back in the niche!