[lightedman]

"That's not something a website can do, even with fantastic UX."

Actually, I used to have a live-updating website AS MY BACKGROUND. Windows 98 and Me, website used AJAX and Comet to make it happen.

You used to be able to set websites as your desktop background.

[queuebert]

I'm sure that was 100% secure, too. /s (I did the same thing back then.)