Hello sir,,
The Importance and values of backlinks cannot be underestimated especially if you are getting a link back from a dofollow blog.
A Dofollow ensures that you get the maximum link juice from the blog you are commenting on and this can help you to increase your blog PageRank within a short period of time.
I can guarantee that you will be very satisfied with my work and the quality of the sites where your link will be published.