Comment on blog is really working? Some of the blog get really high pr on index page. however when we make a comment is not in a index page instead of the story and sometime don't have any pr at all what you think
It might works for less competitive niches and if you don't get right into the Akismet's blacklist after submitting 4-5 comments If that happens, just contact Akismet and tell them you got sabotaged by your competitor. They will remove your site from the blacklist and you will be able to build a few more links.
Blog commenting is most helpful when done on related blogs that may generate some direct traffic to your website. Doing blog commenting just for links usually isn't the best use of your time.
The blog comment could be on the recent post. Long run, that post might gain some PR and will contribute to you. So, don't worry if the page got no PR at all. It will still count as one backlink.