Impressively fast (honestly, that's stellar work), slightly buggy in the editor (focus is sometimes hard to determine, triple-click doesn't always select a paragraph, etc) but I assume that'll get cleared up eventually, and it's pretty good looking across the board.

I might actually use this. Simple and effective and not full of crap. It could use a little bit more documentation (inter-post linking how? hardcoding might be fine, but it'd be nice if that link-popup searched your post titles or something) and probably a small bit of extra flexibility... but finding the balancing point between "feature-full" and "simple" is quite tough, as is keeping it fast. I'm pleasantly surprised with it as-is.

Any chance of custom domain support? I assume that would be a paid feature (it always is, I think that's reasonable), but it is nice to have that option. Also RSS.