Wordpress.org is a free and open source blogging application. It works on several different computer platforms and is licensed under the GNU general public license version 2. Wordpress focuses on aesthetics, web standards, and usability. However, you will need to find a web host so you can use the wordpress application.
There is also a website at Wordpress.com where anyone can register and start a free Blog. You will have access to templates and a lot of different themes. This is an important service because it gives a voice to millions of people. Blogging has become very popular and some of the blogs on the internet took blogging to a whole new level. In a free, democratic and open society it is crucial that we are exposed to all kinds of opinions on different issues. Blogs are usually not sponsored by large corporations so that people can voice their opinions on anything they wish.