NoteHub is a free and anonymous hosting of markdown pages. It can be used for publishing of formated text. For instance, this service might be interesting for people, who want to publish something, but don't want to start a blog.
His changes will be auto-saved every minute, manualy or at a registered page exit. When the same link will be opened again and the page wasn't published yet, the author will be recognized using cookies, or he should enter three non-trivial words from the document, to unlock the draft. The security aspect here is non-critical, since every page will eventually be published on NoteHub anyway. So there is no reason to assume, that a draft contains critical information.