Because developing on that many web standards when the other three have such a huge market share is unnecessarily onerous.

Not supporting one browser or another is rarely if ever a stand against that browser, it's just a decision based on living in reality. I've used and liked Opera in the past, but I've never once tested so much as a web page in Opera since I stopped using it as my primary browser.

There's always a post like this. Who gives a shit about Opera at this point? It's hard enough making a complex web app work on IE, Chrome and Firefox as it is.

Perhaps more pertinently, then http://imgur.com/pUlXu

When they take away opera they will take away firefox, then they will take away the next one. One day we will all be using chrome.

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.

Not buying this slippery slope argument at all. Nobody has ever cared about opera. Wake me up when people stop supporting Firefox.

Well, I am an Opera user too, and I was happy to see that they did not say use a modern browser like Google tends to do.