Is Blog Commenting is beneficial to make back-link?

[Elly]

As SEO tactics go, placing backlinks in blog comments is not necessarily a good or bad thing. However, if you are using the tactic solely as a way to gain more SEO credit, then you are wasting your time and will ultimately hurt your website’s credibility. Some of first things to keep in mind when making comments on a blog are: “Is the website and discussion related to my own business?”, “What value are you bringing to the discussion?” and “Are you furthering the discussion by offering alternative viewpoints or information. In essence, “Are you bringing VALUE?”