guestbook 
noun Computing
A facility on a website on which visitors to the site may record their comments.I won't hang around in there too much though, so if you have a more urgent query then use the guestbook or email facility....
- And likewise, I hope that the guestbook on this site can be used for a similar purpose!
- Make no mistake; I think the people who fill guestbooks with spam, offensive pictures, and other brainless trash are the biggest morons on the planet.