I've been trying to block my comment spammers, but it's getting increasingly hard. I just called one particularly awful abuser -- a small company right here in NJ that apparently hired a hack to do their social media -- and told them I'd consider legal action if they don't knock it off.
I'm turning on comment moderation for a while. And I'm considering migrating over to Wordpress, which will likely cause a big drop in my traffic for a while. But it may be worth it just to stop the spam, and to have some better control over the design of the blog.
I've noticed that most of the commenting about my posts takes place on Facebook or Twitter anyway. That's fine; both seem to have much better control over spammers attaching themselves to my accounts than Blogspot.
For those who write real comments here regularly, thank you - I really do appreciate it.