Sometimes it is nice to narrow your search to a certain group of websites. Google has allowed you to search news sites for a long time by using news.google.com.
Google now also has a blog search tool. This is a great way to find websites that have a certain topic. Blogs can introduce you to a world of information that you never new existed. A lot of times, finding a good blog to read can lead to finding a whole network of websites on the same topic.