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>Arc uses only a small portion of spare bandwidth, imperceptible CPU, 300MB of browser cache, and only runs when a device is connected to Wi-Fi or Ethernet. Cellular bandwidth is never used.

Ugh, the arrogance. To think that you are somehow entitled to use my bandwidth and CPU power is such a sadly typical mindset today.

Yet another reason to run NoScript.

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Well, you're using CPU and bandwidth as long as you're using assets delivered with that CDN. Seems perfectly fair to me.

And that's for each page that uses it I assume, so If you have 10 pages using Arc, that's not going to be imperceptible.

Not quite. =] Arc coordinates and synchronizes across tabs (via an iframe). So Arc behaves identically whether you have one open tab with Arc or 100.

Aren't tabs supposed to be sandboxed?

Origin should be sandboxed rather than tabs, isn't it?

Sounds like the iframe is used to glue sandboxes together

Nicely done.

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