I think they should warn about compatibility but allow us to proceed anyways. Often when I spoof opera to identify as firefox everything works fine. The `built only for this browser` scheme treats the browser as the platform and not the internet as the platform. I understand the practical motivation for perspective, having spent many hours making sure my design worked in IE and Firefox, but I dream of a world where every-browser will render things identically.

Ultimately, its called a webpage not a chromepage.