How do I remove Guestbook messages?
This article will explain how you can remove messages for your Guestbook on InstantSite
Start by logging in to your InstantSite package.
Click on the Edit link.
In the Site map panel, click on the Guestbook page.
Click the check box against the message that you want to delete.
Click on the Remove Selected button.
Click on the OK button to confirm the removal of the message.