I've started using Jekyll + Disqus for simple things (see http://narwhaljs.org for an example).

Much less hassle than setting up a database, installing Wordpress (as easy as it is) and most of all remembering to update Wordpress every few weeks, as long as you don't need in-browser editing and such.

With Github pages (http://github.com/blog/272-github-pages) it's as simple as pushing your source templates and documents (in HTML, Markdown, or Textile)

Jekyll is a little limited though, so I also have some scripts that do a little preprocessing before handing it off to Jekyll.