App for editing files in my Dropbox? My current setup is Dropbox with a directory called /Docs, in which I have my emacs .org outline files.

If you don't know about Emacs and org-mode, these files are plain text, just formatted with ** and so on for headings, however the extension is .org

I have tried Elements, however it would not let me view notes with the extension of .org

So essentially, I want to sync up notes between org-mode and an app on my iPhone 4, without using MobileOrg (which doesn't really sync as such).
You can use PlainText 2, it syncs with Dropbox (you can choose which folder to sync) and it let you choose which file extensions you want to sync.