I've debated whether I should use Apache Roller, Wordpress, or Blogger to do it. Apache Roller is a great piece of software, I have a server side Java background, and there is a great team of helpful developers working on the project. But ultimately, I didn't want to commit to maintaining a blog on an instance of Tomcat or on a hosted Java Servlet environment. I may revisit this in the future, as I'd love to be able to be able to get under the hood of the blogging software I am using.
Blogger is overall the quickest and cheapest way to get started and now is the time as I have several subjects I want to discuss.