... I think I've got 'em licked. I went back and updated two recent posts that were showing screwy characters.
Apparently there's some conflict between MicroSoft Word and html language. Since I was cut-and-pasting some reviews straight from Word, it looked funky on some computers. It looked fine on mine, but on Jean's it was all loopy. And the feed to Facebook was also coming up weird.
Anyway, I've found (with Jean's help) a workaround solution. Please let me know if you still see funky-looking posts.