Online forums are as old as the Internet, and despite being around for a long time, they are still a popular destination for Internet users that want to get specific questions answered, find solutions for their problems, or simply to socialize with other people that are interested on a specific topic.

Most of these forums also allow their members to create a custom signature containing hyperlinks, that will appear at the bottom of each of their posts. Now if you consider that some popular forums get hundreds of thousands of visits every day, you can see how a catchy link below your posts could end up sending some traffic to your website.