I appreciate what you've done here, but when I hear the words "enterprise wiki" (as your URL implies) and you can't paste MS Word formatted text into it, I feel a disconnect. I'm not saying that is how it should work, or is a feature that I would like, but if you approach an enterprise with this and explained that they would have to use something called Markdown to update it, they would laugh in your face. Most, if not all, non-technical users of software do not want to (or simply cannot) write markup in any form.

Nice work, though. I really like it.