A year or so ago I stopped using RTM because the web interface became so buggy and slow that that it wouldn't load half of my lists. I let my Pro account expire. I was really impressed with the tool originally; hopefully they've fixed those issues. I've been doing fine with a plain text file since then.
I honestly think there's always room for another good todo app. Different workflow/interfaces click with different people.
2 days ago I registered A website for my new todo list concept, and I got it set up a few hours ago. Just need to get adsense and my dns set up better and I'll be ready to roll with an MVP... ToDoWiki.com
