Two great posts from Jane Friedman at Writer's Digest. The first tells you all you need to know in the title - Why Don't Publishers Market and Promote the Books they Publish? One of the questions I asked many times when I worked for publishers.
The second post is about what new gadgets like ereaders and the iPad mean for authors - and how they can be used. It also includes some great links to articles by some big thinkers on what these things will mean to authors and publishers of the future.
And check out Writer's Digest site. It's full of good things for writers.