I enjoy writing -- stories, essays, diatribes etc. Last weekend I worked on a piece on my iPhone using the built-in "Notes" app. I kept emailing it to myself every time I wanted to "save" a version. It worked, but it sucked because the file was stuck inside my phone. I need the file to be on the Internet so I can work on my phone when that's convenient and on my computer otherwise and it's all the same file. Also, it would be nice to have the file really be in my version control repository on a remote server.
It would be great if, when necessary, I could use the phone to work on even long piece of writing like a long essay or a novel.