AnimeCanuck said...But it's that I had the default font plus this other identical font with wider spacing. So I was seeing the default font more than 2/3rds of the time. But as I said, I only had this script running for 20 reviews yesterday, which is a small sampling, too. (And I was sad to see my lovely Hirose and Tsuruya fonts not show up, but perhaps they're kana only???)You probably didn't have the default font and an identical font in the rotation for font changes (not counting hover + post-answer). If so, it was most likely just a similar one; I know Meiryo and MS Gothic are fairly similar (though you don't have Meiryo).
If you've added Tsuruya and Hirose and they aren't showing up, chances are they don't contain kanji (or at least not the kanji for the words in your reviews). A certain picture on the Tsuruya homepage, and a similar one on Hirose's, suggest that they are indeed only kana.