If you are looking for a way to get more backlinks in a non black-hat manner, then commenting on blogs is a great solution. When you comment on a blog you will get a good unique backlink back to your website or blog from a relevant site. But commenting on blogs will not only bring you a new backlink, but it will also be a way for you to promote yourself as a leader in your specific niche. When people start to see your name over and over again, they will be very interested to see what you can offer. It is therefore also a great way of building an image and getting your name out into the world.