Get Backlinks With Comment

Many ways lead to Rome, many ways lead to backlinks. There are many ways to get backlinks. Backlinks is a way to increase blog pagerank. To get backlinks, you can submit site to directories, exchange links with your friends, or pay backlinks from SEO company. There is a more cheap, even free, to get backlinks.
Comment is a way to get backlinks. Not just a comment. You give a comment to a blog that has dofollow setting, and write your blog URL. Comment to dofollow blog with high PR can help increase your PR.