Depending upon how your account is currently set, you may need to turn on one or two of the "and send me an email...". And by "subscribe", Will means to go into the Forum for CL and "watch" it. What will happen is actually two-fold. First you will get a notice that a thread has had at least one new post since the last time that you opened the specific Forum. If there are one or more replies to the thread after the one that triggered the email notice, you will not get another email until you have at least opened and closed the thread. And the Forum title will show up to you as darker print until you open it once. I think that latter happens whether you have the email notice turned on or not.