Well, what I would do is a) subscribe to the thread and let it e-mail me when there is an update, and b) save the first page of the thread as a bookmark in the browser. Of course, I don't visit the site from anything other than my home computer, so this solution works well for me. If I had to visit from another computer regularly, it might not work so well.
Edit - Actually, just subscribing to the thread should work. Once you sign in, you can access all the threads you have subscribed to through Settings.