Hi,

You can delete undesired entries. Just go back into your Website Maker editing interface. Switch to the page that your guestbook widget is on via the "Pages" panel. You might have to hit the "update" button on the guestbook widget (in editing view) for the newest entries to show up. Each entry will feature a little X in the upper corner, which you can use to remove that particular entry. You will just have to click on the "X" and confirm another prompt. Done.

I hope this helps.