Apparently on March 21 I inadvertently took out part of the Blog Window Widget code on my template. That is why I no longer have any "most popular posts" on the right sidebar. As soon as I have a few moments to figure out where to put the code in the template I will fix it. I don't remember where I put it before and I need to fiddle around until I figure it out. Lesson learned: keep notes. Think I'll begin to keep notes? Doubt it.