http://newsletter-fondazione.softfobia.com/feedback/link/ZWI5YWRkMWItNTVlMS00OTY0LWI5NWEtOGI5OWNhM2YzNmE1?url=http://www.adamblogs.nl/34zxVq8

This is display.cgi (source). It takes some text you enter into a form, and displays it for you as HTML. This is a great way to see how some HTML code looks in your (or someone else's) browser. So paste 'n go: