As you can see from title the purpose of this blog is to help the webmasters to get backlinks for their site. So go ahead and post a comment, no restriction for links, if you reach 10 posts in a week you’ll get a text link for 2 months in the Sponsors area (side bar).
You also can post about everything you want but at least 100 words, this is the only requirement.As you can see is a dofollow blog.