When you're ready click the 'Click Here to Continue...' below. A prompt will appear asking you for the URL you want to appear in the frame make sure you enter everything including the http:// or https:// correctly to avoid an error. The site will then attempt to load that site into this frame provided that is possible. Some sites do not like being loaded into frames like Google, YouTube and Facebook for example and will block any attempts to load their sites into frames! In the case of YouTube there is a workaround. In the YouTube URL change the /watch?v= in the URL to /embed/