Alright, I went through my site to make sure that everything validates. The biggest culprits were unclosed image tags on pages that I converted from my old site and attempting to wrap a link around a DIV.
Unfortunately, my Musings page doesn’t validate, but that is because of “un-espaced” characters in URLs. I’m not about to escape every ‘&’ in any site I link to. Validation isn’t that important to me.