When I started my blog in March 2011, my major link building technique was blog commenting and with it I was able to get Google Page Rank of 2 without using any other form of Link Building. Comments left on CommentLuv blogs like this one offer a big advantage because the CommentLuv link will end up sending targeted traffic to your blog as well.
I have discovered blog commenting to be an effective strategy to build back links though it will require time and your patience. Time in the sense that you will have to be visiting blogs in your niche on a daily basis to drop a comment or two and patience in the sense that you will need to read the article on those blogs before you drop your comments.
As you know reading these blog will also help your knowledge, so it�s more like killing two birds with one stone when it comes to blog commenting.
If you are using blog commenting for link building, you should avoid the usual SPAMMY LIKE comments such as: �GREAT POST�, �NICE ARTICLE�, and �NICE BLOG�. Most of the time, these type of comments end up in the trash folder and it will just be like a waste of time and energy on your part.
To know more about getting back link from blog commenting, I recommend that you read this post � The Benefits and Power of Blog commenting ajmalseotips.blogspot.com