I used to look down on the whole concept of blogs. It just seemed like a person was just keeping a diary and then publishing it on the Internet. "Look at me! I'm self-absorbed!"
I was wrong. A good blog about the right subject can be more appealing than a pile of magazines worth $2.50 each. The blogs that are self-absorbed don't survive. The ones that speak honestly about any number of subjects thrive. The law of the Internet blogosphere.
It's all about the Internet. If you are a serious writer, you must have a blog. It's just the way the business is.