Just discover Chrisbrogan and love his site!
For me the hardest part is finding time to do the necessary traffic building steps.
I have to say that commenting on other blogs is a good way to get real, returning traffic and of course good content!
I use Entrecard, MyBlogLog and Blogcatalog but I find Entrecard to fit my busy schedule. You earn credits and use them to buy ads on other blogs. You can earn credits by actively dropping your Entrecard on other blogs. You can earn credits passively by accepting ads on your blog.