I discovered http://whitneyhess.com/blog/ thanks to http://www.gaminghorror.net/ today and watched her presentation Evangelizing Yourself.  It's interesting, and I don't disagree with anything she said, but I do wonder if it really applies to everyone.  I think programmers and game designers do blog a lot about their field, but I also think evangelizing is a goal in itself.  Writing isn't easy and promoting yourself might not be where you want to spend your time.  But, you should still watch it, you learn a little about marketing and even more about networking and confidence.