Guestbook module provides a site guestbooks. Guestbook owners can delete and comment the guestbook entries.
1. Copy the 'guestbooks' module directory in to your Drupal 'modules' directory and install it as usual.
2. Set the correct permissions under People > Permissions > Guestbooks
3. Simple View with listing guestbook entries has been made available to use.
4. For Version 7.x, Simple block for Guestbook Form has been made available to use.
That's it! You are all set to use the module.