Like so many others, my sidebar is pushed to the bottom of the page. I've read the other posts on this topic, and have looked through the "problem" post (the post after which the problem started) for unclosed <div> tags. I didn't see any, but deleted the post just to be safe. That didn't fix the problem. I will note that the text on the blog seems to have changed at the same time that the problem started, though I did NOT paste a post in from Word.
The URL (which I saw requested on most of the similar discussions) is http://www.moneydummy.net.
I really appreciate your help! I suspect that this is very simple, but beyond the skill of a novice like me.