A PHP implementation called [bBlog](http://www.bblog.com/about.php) is [Smary](http://smarty.php.net/)-centric. Neat.
Look also at [Snurf](http://bdash.bluewire.net.nz/2004/08/02/snurf-a-python-based-blogging-system/), which is a Python-based blogging system. Snurf’s designer calls attention to [a W3 document](http://www.w3.org/TR/chips/) about problems any blog designer, or CMS designer could run into.
He also [points out in a blog entry](http://bdash.bluewire.net.nz/2004/07/28/new-website-backend/) the problems he had with bBlog, what made him hack his own.
Also, from today’s heap of news: [the gbaunix](http://www.kernelthread.com/publications/gbaunix/). Cool, very cool.