Revised - Increasing traffic to my blog

First, I was thinking of using AdSense to advertise my blog, but then changed my mind because I would have to pay if somebody clicks on my link. The other alternative I have in order to increase the traffic to my blog was to submit my blog to Google Blog Search. Thus, that people can get a hit when they search for key words that are similar to my blog. For example, if you search for think, tank, or think tank then my blog is suppose to come up.