At conspiracy outpost we have a cool way to choose what content you see from forums via user selection. You can fill the topics list with whatever interests you from the forums you want!
Site Features Explained
If logged in (cookies used for forum selection) Just above the start new topic button should be a piece of text. "Showing topics from".... If you click that you can choose which forums you will see.
If logged out (cookies not used for forum selection) You will see icons along the top. one for all forums and then one for each forum.