I'm waching a concerted comment spam attack on coofercat.com at the moment. So far I've had 13 comment posting attempts, all from different IP addresses (presumably a load of zombie Windows machines). I'm seeing them every 10 minutes or so, each to different articles. This looks to me like a GM specific attack, and controlled by a central point (because the posts are not randomly hitting articles). I've disabled comments until I can sort this out.
Incidentlly, all the comments have been for online casinos and gambling and contain a short paragraph, presumably taken randomly from an essay. I've tried scanning the remote machines, but as yet haven't identified anything useful.
Update: I've made some changes to the comments system. You have to preview comments to post now, which should prevent 'bots from posting.