Some of my favorites:
- A Newbie's Guide to Publishing - IMHO, if you can read only one blog, Joe Konrath's is the one to read. It's the one that got me started on the self-publishing kick, and there's always insightful information and opinions.
- Write to Publish - I like this blog because not only does it talk about the business of self-publishing, but it comes from the point of view of someone who is running a small press publishing company, so you don't just get an author's point of view.
- The Passive Voice - this is a good blog to get an aggregate of the popular postings on the industry. The author of the blog posts several times a day, and it almost feels like a feed of other blogs and articles.
- Let's Get Digital, Digital - David Gaughran is another indie author who writes insightful posts about the industry. Think of it as a less influential/popular version of Joe Konrath's blog.