One banner per page. Pax.nu - Free Guest Book service, which includes a 'Quick Message Guide', a choice of background or use your own, Anonymous voting for your home page and more. You can customize colours, fonts, titles, and header text to make it look exactly like the rest of your site. You can even get an email when it is signed. A free guestbook service that enhances your web page by letting your visitors tell you more about themselves, helping to build a community around your web page.
Users answer multiple choice questions instead of leaving comments, four banners per page.