What I like about WordPress in particular for SEO is the ability to easily create categories. Another nice features is the ability to associate tags with a topic, and each of these tags are then organized in a nice, search engine friendly, keyword relevant structure. For example, here is a link to all of our posts that have been tagged with the term Organic Search Engine Optimization. I’m tagging this particular blog entry with that term, so you should see this post at the top of the page if you follow the link.