There is absolutely nothing wrong with earning a link from a blog post you decide to comment on. In fact, if you comment often on blogs, it is a good way to increase the amount of inbound links pointing to your site’s pages. However, there is a “right” way and a “wrong” way to go about accomplishing this.
I’ve finally decided to enable comments on this blog. I had decided not to enable them in the past simply due to the fact that I didn’t want to add an additional task to my already busy schedule. However, I’ve decided to go ahead and try it and see what happens. If it becomes too burdensome, dealing with blog spammers and the like, then I may turn them back off at a later date. As for now, feel free to comment away.