If you want to leave a comment on this blog, you'll notice that there's an extra step involved.
I've been getting a lot of Comment spam lately and most of it appears to be generated by robots. It's not a huge hassle to moderate but it does take time. So I'm going to ask commenters to show me they're human.
I know that you're human so I hope you don't take offence. But those others - I'm not so sure.
So feel free to comment as long as you're really a person. And if you run into problems, leave me a comment.