WordPress
This blogs runs on WordPress platform. Wordpress is a state-of-the-art semantic personal publishing platform with a focus on aesthetics, web standards, and usability.
I have been using WordPress since the day I registerd my domain and hosting back in Jan-2005.
K2
K2 is a WordPress modification—an advanced template—created by Michael Hielemann, Chris J Davis and Zeo, created as an improved Kubrick of sorts.
I have been using K2 since the day it saw its first public release. Since then I have customized it for every release. It was built to make it an easy foundation for others to base their work on. And because it’s free and open source, well you can do pretty much anything you want with it. The result is 3 Column K2 style.