Fargo is a simple idea outliner, notepad, todo list, project organizer.
Files are stored in Dropbox. They are accessible anywhere Dropbox is. You can share files with other users, or publicly.
The HTML5 local storage in the browser/real files in Dropbox combo is a great idea. And, since Fargo outlines are plain old OPML files, they’ll work with all sorts of existing mobile and desktop outliners.