Do not forget to use Bookmarks, this way you will never loose the interesting topic! Bookmarks are recorded within the forums and accessible through "User Menu"(there are not placed on your comp.)

Also - new multiple level subscribtion feature allows you to subscribe to forums (notified when new messages or topics added to the selected forum) or subscribe to topics (notified when new message is posted to the topic). Now you can easily subscribe and unsubscribe through "User Menu"