alt Hacker NewsBack in the 90s when the web was non-commercial and fun, I added a "Don't Click Me" link that loaded a 'browser test' page (after a series of "are you really really sure?" dialogs) that exploited every historical browser bug I could find. Infinite popups, inescapable dialogs, ActiveX quirks, various hangs and crashes, the works.
If it didn't crash your computer, it eventually displayed a single popup that said "Congrats on not using Internet Explorer!". I wish I still had the hate emails.
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there was a common "shock site" called "last measure" that did this. it loaded all sorts of offensive images, blasted a loop of a guy yelling something offensive about pornography, and then proceded to lock up your machine.
Were there multiple of these sites?
If not, I have fond memories of using yours!
I remember when `alert` would lock up the entire browser UI. So if you put it on an infinite loop, that was it. You had to kill the browser process to shut it off.