Comment spam

I’ve been seeing a lot more comment spam than usual the last few days. Somehow they manage to post it even when I require logging in to post comments. I just added yet another anti-spam plugin, so I’ll see how that works. I’ve also been blocking every IP address any spam comes from and adding more words to the blacklist, but that probably won’t help because all of the spams are unique. I’m really getting pretty disgusted here.