Nice work!

Being able to move your blog out to your own domain is going to be huge for some bloggers (in terms of adoption). I'm glad to see you taking on the challenge and getting involved ;)

One thing you might want to give some thought to in how you're building it though is SEO. With a long page load, and a client-side only script to power it, search engines might have a hard time indexing that content. When we were building Reprint late last year that was one of the more important things we tried to focus on, and why we choose to use a server-side language instead of just javascript. Having the pages rendered out immediately is a huge boon to SEO.

Other features you could give some thought on too are themes, combining multiple authors, and tag filtering.