Yes...that's one of many ways to drive more traffic to your site. There are many other ways. For example, you have to do "blogwalking". Visit people's blog as many as possible and leave your comment and the url of your blog there. But remember, there are two types of blog. They are dofollow blogs and nofollow blogs. If you leave your comments in dofollow blog, you can also increase your pagerank. Good Luck!