Originally Posted by IceTrojan
while this just unbolds the threads you've visited, my suggestion completely eliminates the thread from your list until a new reply is posted. It also only eliminates it if you've actually visited the thread, so it will stay on without timing out.
MyFlyertalk does that as well. For a few minutes after you view a thread it might still show up but later on it will not show up. Also make sure you're not viewing a cached page.