Or maybe they find Emacs hacks more interesting to blog about than the CRUD they write at $day_job. Or maybe their NDA means they can blog about their tools an

Or maybe they find Emacs hacks more interesting to blog about than the CRUD they write at $day_job. Or maybe their NDA means they can blog about their tools and not what they're using those tools for. I don't think it follows that just because you blog about something, it means you spend the majority of your time doing it.