WordPress
When I started GameArchitect, the word blog didn’t exist yet, and there was, therefore, a real shortage of decent blogging software. I ended up buying Joel Spolsky’s CityDesk, mostly because it was what he used for Joel on Software and I like the look of his site.
CityDesk hasn’t had a lot of work over the last couple of years, though, and I never have managed to figure out how to make it generate a proper RSS feed. So I’m switching the site over to WordPress, about which I’ve heard good things. All old content is still available at http://www.gamearchitect.net/citydesk.html. Pardon the dust and plaster.