If you would like feedback on your site, or if you would like to know where in the world the visitors of your site live, you may want to add a guestbook to your web page.  Many people will take the time to leave comments and suggestions.   Below are a few links to guestbook services.  They are all free and are paid for by the use of advertisements on them.

TheGuestbook.com
(I use this one.)
Dreambook
BeSeen.com