Search on search Engine using your keywords. Lot's of available list there. Go to the page and leave your own words.

Here you will find a huge list of blog commenting sites with PR and Alexa rank
Top Free High pr Dofollow Blog Commenting Sites List

Please don't do blog commenting using any particular list.Because using same list may harm your site ranking.Please do relevant blog commenting of your niche and search on search engine for relevant blog commenting using your keywords.

Just search using this:

"keyword" inurl:"blog"

This will find blogs related to your keyword. There ya go.

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if you ask me! blog comment is good seo, but you have to use it in a good way, because using same list may harm your site ranking. (Your website will be penalized by google).

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here are find some blog list.




Dofollow Blog Comments Site List

Search sites by using your website keywords.

You can go through this post Updated High PR Do-follow Blog Commenting Sites List 2014 to get a list of blog commenting site.

Hello,
You can search in Google Do follow blog comments sites list, You will get good list

Google search engine will provide you number of Blog commenting sites related to your website.