Yes, I have turned comments off. I'm being hammered by thousands of spam hits per day. It is even causing a huge load on the server with comments turned off. pyblosxom seems to need too much resources when there are lots of entries, so I must switch to WordPress when I have a chance. I've tried banning the referrers with .htaccess, but they then change to a different domain.
Meanwhile, my glom wikipedia site is getting hammered by spam. One spam user deleted most of the content while adding spam links. There's also a huge number of bogus users, though they don't seem to have done much yet. I don't know how to deal with this at all. Even banning one user seems to require an IP address, which I don't know how to discover easily.