The old web site had an extension that permitted visitors to "sign" a guestbook without actually logging in. We would love to continue this as it did provide valuable feedback for us. However, it also caused problems.
Only about 1% of the guestbook entries were real, all the rest were spam! This has apparently gotten to such a level that guestbook and other comments/ratings developers have given up on providing "guestbook" extensions as they themselves were being blamed for the spam generated through their extension!
So, sorry, no guestbook available here. However, if you want to comment on the website or any of the content, please contact us as we really value feedback!