Seems like maybe the website could be a bit more clear that it was based on the Smultron editor. I know it's a bit obvious to anyone who's familiar with Smultron, but it feels a bit disingenuous when it isn't mentioned anywhere (that I can see, anyway).
Thanks for writing! Saved me a download.
Nice start. More intelligent syntax awareness would be nice (auto indenting in HTML, auto completing " < ', highlighting CSS within HTML, etc).