All you have to do to sign the guestbook is click on the "Bravenet" "View My Guestbook" link below here which will take you to a page where you are invited to leave a message (click on the "Post" link you will see when you get there) or just look at the other messages if you don't want to leave a message of your own, which will be a shame as you are there anyway so why not leave one?.
GuestBook Page
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