You can setup public or private forums as well as chat for your site. If you don't have a site they also offer free homepages. One of the top services in it's category. You create your form with a very flexible editor. The form and script are hosted on their server with a small ad at the bottom of the form.
Email is sent to the visitor and the webmaster.
The tool is currently in beta testing and you can submit to 20 search engines for free. A quick and easy free guestbook with a mailist feature from Miatrade. NetStudio Netstudio allows you to create custom banners, buttons and headings as well as apply efects to your own graphics. It is in public beta testing but works quite well. They say that not all applications are approved.