If you're looking for some math blogs to follow, Mathblogging.org has an extensive list. The blogs are listed in alphabetical order by category.
The categories are:
Teachers and Educators
Comics, Recreational Mathematics and Other Fun
General Scientific Interest
Journals, Publishers and Similar Feeds
In addition to listing the name of each blog, you can see a blog roll of the most recents posts from each blog.
Leave a comment and tell us which blogs are your favorites and why you like them.