Improving Blog Traffic

That's what I am working on for the past week. I searched for blogging networks and signed my blog in some of them, hoping to boost my website visitors. I downloaded a PDF where the author claims that he has some interesting tips, all discussed in the 27-page document, on how to manage and eventually increase traffic for free. Interesting topics are also one of the common things bloggers consider as one of the factors to attract readers. 

I have to think of topics. Interesting ones. I guess that's where I'll start. Maybe you can suggest some?