You would think, given the frankly microscopic readership numbers I have here, that comment and trackback spam wouldn't be that much of a problem. If you thought that, you might also think that there's no way you can get sand in your shoes by walking on the beach for half a minute. Either way, you'd be wrong.
I've been under concerted trackback spam attack for the past couple of days, so I've set the "one day only" flag for trackbacks. Since I've never had a legitimate one, I don't think this will be much of an issue.
Although I haven't been under such a concerted attack in comments, I have also had to deal with comment spam for a while now, so I have downloaded, installed, and tested this plugin. The upshot is that you may now only post a URL in a comment here if you are signed in via TypeKey.
If this works to block the spam, I might even think about unmoderating comments. Wild.