I have found some new tools and added some links to this page to energy-related news and blog posts.
Grazr provides a widget that provides interactive interface for blog posts. I listed my favorite blogs on Technorati, and then provided this list of blogs (OPML XML file) in a Glazr widget (which is also embedded in this page). I also put the RSS feed of recent posts in my Technorati blog list in Glazr.
Also, Sphere is a service that searches for related blog posts, with sometimes mixed results compared with the more consistent Google News and Google Blogs.
Finally, pageflakes provides a way for feeds to be aggregated.