[Nursie]

Great, more sites that will make my laptop sound like an aircraft taking off.

Just nope. If you want to block me from accessing your content with an adblocker active, go for it. But you aren't using my machine like this.

Without explicit agreement I wonder if it's even legal.

[AstralStorm]

It is as legal as any silly website eating all your CPU. Time to fix JS engines to prevent such abuse. Make them a real virtual machines while at it not sombre half baked efforts - that would also help with security holes.

[dawnerd]

I would love it if browsers detected spikes in cpu usage and ask if you want to end the script, similar to when a page stops responding/locks up.

[cimmanom]

Firefox does do that.

[Nursie]

AFAICT firefox does that when it starts causing problems for the page, and causing unresponsiveness, but not just for processor spikes.

[dawnerd]

Hmmm haven't noticed it but I don't use it too much, just for testing. Might have to switch for a while to see if I like it.