These days forums are becoming very popular. You can get lot of information from forums. You can easily ask some questions and get the reply’s from other users. You can easily share your ideas, give tips and suggestions on different topics. based on the topics you can choose a good theme for the site. You have to create multiple sub topics under your main topic. Most of the forums will allow a signature posting where you can place your website link on it. It will help you to increase link popularity as you post new topics and contents. If you keep good keywords you can increase the popularity of your site. You have to implement some SEO techniques to get more traffic to your site. So totally forums are helping many people.