What is the benefits of blog posting?

[Jessianut]

They could type your name right in to their browser, but that's an audience you already have. They know who you are, you're on their radar, and that doesn't help you get more traffic on top of what you're already getting.
You could pay for traffic by buying an email list (don't you dare!), blasting them, and hoping some people open and click through on the emails. But that's expensive and, you know, illegal.
You could pay for traffic by placing tons of paid ads, which isn't illegal, but still quite expensive. And the second you run out of money, your traffic stops coming, too.