Link building is considered to be as a base of Optimization process and when it comes to do follow links even Google considers such inbound links as a vote to a website. Such back links can help you to increase the page rank of the website and by the time improve creditability of the website from Google point of view. Hope each SEO and Online marketers are well aware about the fact so they are looking for varied ways to generate do follow back links for the website or any particular web page. Though it was a time when do follow links was easily available by placing links in any of the website, but this has induced spamming activity and Google had to roll out No follow attribute to get rid of link spamming. So now if you are able to place a link in a website but such links are no follow than Google will not consider it provided if such link are from high Page rank and niche website.
You can hardly come across with a website providing do follow back links and that too free of cost. Forum or open boards are one such place where you can generate some decent number of do follow back links for the website. But all such forums do not provide do follow back links; here you have to make research and find the forums providing do follow back links. Now many of you might be well aware about forum posting and some may not have come across with, such folk may be confused how to generate back links from Forum posting. Forum are the board where discussion about any particular topic or category is going on, there all those topics are divided and organized into different category such as Search engine optimization, Google, Yahoo, Paid advertising, Bing and so on. If you have any query about optimization process then you can very well raise a question by creating a new thread in Search Engine optimization Category. Here each section has a moderator who keeps track on the activity of the member; if any such raised questions remained unsolved they make sure to reply the same. So this way conversation goes on. Once after becoming registered member of the forum you have to build reputation and have some decent number of post, it is than you can gain an option to display your link as a signature at the end of your each post. You can update your signature from Control panel of your profile.
Some forums may have placed some condition for displaying links as a signature such as Digital point requires you to post at least 10 posts and wait for 7 days, similarly SEO Chat requires you to post at least 30 posts and has to wait for 30 days as a member for being able to display link as a signature whereas some forums may allow you to display link as a signature from very first post in a board such as allcoolforum. So it depends on you to select the forum and work accordingly. The number of post and time period to display signature is only a step to discourage link spam. Hope this guide will help you to generate some decent number of do follow links from Forums.