We have a guestbook now?

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I just noticed something today. Under the usual My Stuff area, I noticed it now says Guestbook. Did this just pop up today or have I been so busy that I haven't it noticed it before? If you haven't seen it yet, you can leave messages for other players and chat back and forth without being in the same room. At least, that's what Pogo_Spike says. He's the first comment on mine to introduce the guestbook. LOL