Some people attribute the popularity of online forums to the rationale that we humans are simply social animals. It has been built into our genes to engage, share and corroborate.
Those business owners have seen through our characteristics and there is no escaping even when we are online. They have built popular forums, and they have made big bucks!
Assuming you always had a passion for politics, and you are ever eager to discuss at length on policy matters, then why not set up a forum that focuses on politics.
Granted, the early movers have left the scene, but there is still money to be made. After all, it is better late than never.
Moreover, the proliferation of the Internet is set to continue, which means that you can have a common over an ever-expanding audience.
Get people excited about your forum by talking about it openly as you visit other forums.
Another way to promote your new forum is to make completely bizarre comments while deliberating the issues of the day if only to get people to pay attention to you, and your new forum by extension.
Continue to work on it as you start to accept progressively more traffic until it comes to a point when you want to incorporate online ads to monetize your forum.
Another tactic could be highly rewarding, though it can backfire. You have seen some of the most successful forums charge a fee for members who wish to participate in a specialized section of the forum.
You may want to include this practice into your overall business strategy, as this means recurring revenues for you. If you wish, do a research to find out how the WarRoom section of the famous WarriorForum is able to pull that off!
Forumotion is a great free forum making tool that you can use to quickly create a forum in minutes.