I don't think it's obvious to everyone. It's never crossed my mind to do it, so it's never crossed my mind to want TD to do it for me. Generally, when I set up a system of this kind, I know that the folders will be areas of responsibility or projects, which will never misconstrued as tasks. Areas of responsibility will be things like "Work", "Home", "Murder Incorporated". Projects like "PPC Website" or "build explosive device". Tasks are generally verb-noun, like "buy materials", "call hitman", things like that. So, for me, and others, converting one to the other simply doesn't occur.