Is blog commenting effective in 2011 seo?

[martinwhisely]

As per my overview Blog comment help you to get increase your keyword ranking and page rank of the website. It mostly the edu and gov backlink which is very strong boost up your page rank of the website. If you do in relevant blogs then it will increase your visitor to your website and helpful for getting more sales conversion to your promoted product or services.

[langergrp]

blog commenting is far too easy to attain backlinks, this is why google has really devalued the influence of the links in comments sections, they best place to try and get links is "above the fold" this mean links that are naturally visable without scrolling down the page. these are given the highest weighting and the highest clickthrough rate.

for a comment link to be elegable for a good chance of being a good link it needs to be one of the first comments on the post, as link juice is reduced the more times a link is seen, so the first link in a list is given slightly more weight than the last link in the list