Forum link building is an exceedingly effective system for building incoming links to your website. There are a few tips to keep in mind when posting on a forum to build links back to your site. Make sure that the forum you are posting on is highly ranked and gets a large amount of traffic. You can post on certain forums that are not relative to your niche, but that are ranked high in Google and receive a large amount of traffic. Try a search online for forums that have relevancy to your website, check their rankings, and post on those that are top quality. Don't spam. Spamming will either get you kicked out of the forum, or it will certainly not compel anyone to click your link to go to your internet site, which is the whole purpose of posting on a forum in the first place. Make your comments important to the subject and educational if you've an answer to a question. Otherwise, you can raise a question too.