I created http://untodos.com http://untodos.com last year with similar groupings (today/soon/whenever). I used it for about a year but stopping using it because

I created http://untodos.com http://untodos.com last year with similar groupings (today/soon/whenever). I used it for about a year but stopping using it because adding/removing tasks individually was too much work and I much preferred managing nested todo lists in a text-editor with code-collapse features (so I could hide entire sublists). Earlier this year I created http://bulletxt.com http://bulletxt.com (text-editor like todo/outline app with collapse) and have been using it ever since. I really need to finish it up because quite a few HN people have been using it lately. Funny you mention GTD. I'm driving across the country and earlier today started listening to the GTD audiobook. Five minutes in, I stopped it. Just not my cup of tea honestly. I listened to Feynman and Kurt V. instead.