Some sociopath — that’s all it is, there’s no gain here for him — has been sending trackback spam to this site. The identifying url is always simply geocities.com. I’ve been forced to block this, though I’ll probably remove it in a few days. I don’t know of anyone who does have a geocities site, but if you do, don’t list in in your comments or your comment will be blocked. Sorry for any inconvenience.