Which is so little, that I'm surprised that he even bothered to write a blog post about it. Clicking through the links it looks like a lot of the pages are blog

Which is so little, that I'm surprised that he even bothered to write a blog post about it. Clicking through the links it looks like a lot of the pages are blogspam/secondary language versions of bigger websites, so I doubt that a lot of those webmasters are even trying to have a properly set up MX record (or care about that).