Sneaky spam in conversational replies to blog posts

I'm grateful that my blog posts attract lots of engaged, funny, and challenging comments. But any popular post also attracts spammers. I use Antispam Bee to automatically eradicate a couple of hundred crappy comments per day. Nevertheless, some get through. Here's a particularly pernicious one - it appeared as three comments ostensibly in reply to each other. At first glance these look like …