As of now, the only way to unwatch threads is to go in to the thread and click "Unwatch Thread" That's very inconvenient. Even more so if the page has a load of crap on it coz it slows down the page. I have 2 simple solutions to this problem: 1.) You know how watched threads have an eye symbol next to them? Well clicking on the eye should give you the option to stop watching them. 2.) The "Watched Threads" search at the top of the page should allow you to mass unwatch threads, similar to how art sites let you mass unwatch artists.