The Top 10 Ways to Market Your Book with a Blog continues with Step #3:
3. Participate in the blogosphere: Read and comment on other blogs in your field. This is a prime way to build readership of your blog. It is also a way of getting fresh content for both your blog and for your book.
Leaving comments is akin to raising your hand in the classroom or town hall meeting: every one turns to look at you and listen to what you have to say. Get out there and raise your hands.
Even if you don’t have a blog yet, you should be researching what others are writing about on the web in your field. This is just plain Marketing 101. And finding other blogs in your niche will show you the possibilities.
Don’t worry, you’ll probably find as many bad blogs as good ones; and when you do, you will be inspired to do better. This is just plain Competition 101.