If you're wanting to set up your own blog and don't know which software to use, check out this article on sitepoint. It takes a look at 3 of the biggest/well known blogging tools and goes in to some detail on the strenghts and weaknessess of each one. I personally haven't tested them all, but use wordpress on this site and find it very easy to setup and administer. The three blogging tools looked at are: