Most websites us a split-pane approach to Markdown editing. You enter your text in one field, and the resulting HTML appears in another.
I think this is silly UI, and would like to see websites adopt the iA Writer approach to Markdown editing.
Sadly, I don’t know of any library or parser that lets you do this, so I started writing one.
This thing is currently easier to break than to use, partially because my approach is broken, partially because the content editable API is broken, and partially because it’s just a one-day hack.