Hmm, not sure why some posts keep getting doubled. It doesn’t look that way on WordPress’s back-end. Anybody out there have some ideas about why this is so?
Edit: I learned that this is an issue with one of the plug-ins I use to maintain my sidebar. No solution yet exists, and it only happens when I label a post with more than one category label. I need the sidebar, so we’ll keep it simple: one category per post for the time being.