Forums are platforms where people can discuss and debate on specific topics. Forum posting can get backlinks to your blog/website just by posting your questions and content on forum. It is an important and effective SEO link building method for getting quality traffic and quality backlinks to your website. Below every post you made on a forum, there is a part known as "Signature". Just add your link inside this signature box with the anchor text to get quality keyword specific backlinks.
Forum owners can submit their sites here.