Dofollow blogs and Dofollow forums use the dofollow attribute and that helps you to boost your backlinks and helps search engines to reach you with relevant and more searches. As we know that Link juice from a high PR blog or forum or website is good for your blog to boost your Google Page Rank and Traffic of your website.
Here is a list of dofollow forum which have Google page rank, register their use your blog link as signature and make sure that you stay active as these forums are very active and you will get backlinks as well as traffic.
24 HTML Forum
26 PhpBB Forum
29 SEO Forum
It is obvious that you can’t be active on all the Forums but it make an effort to at least post once a week in these forums so the crawler can check your latest posts and send traffic to your blog/website but if you are not able to keep yourself active then check the following Bonus from Techies Home
Bonus List Of Dofollow Blogs
DoFollowlistbloglist.com is a website dedicated to Do Follow Blogs. It has organised Do Follow Blogs into separate categories which will help in getting deep links which will enhance the link relevance which will enhance the Link Juice. You can make use of this website and you will surely help you to get healthy backlinks.