[glenngillen]

It's probably worth checking out NestaCSM (http://effectif.com/nesta) if you're interested in doing this.

Sinatra in front, but all your posts are managed by Git and can be Markdown/Textile/HAML (or anything supported by Tilt iirc). Push it to Heroku if you want easy/free hosting.

Takes care of publishing an RSS feed, tags/categorisation, and a bunch of other nifty things beyond just generating a static site.

Example: http://blog.peepcode.com/

(disclaimer: I used to work with Graham who created it, but I genuinely think it's awesome and use it for almost every site I build now)