SEO is too important to skip purchasing this plug-in! There are a few bugs when using a customized template, but support is very friendly and won't give up until the plug-in is working. I highly recommend this extension for every joomla site.
So far, I really love Jaggy blog. It's easy to setup, easy to figure out, and easy to post new articles. It's great for websites where the blog is the secondary concern. Overall, very simple program at a great price!