[raisedbyninjas]

Doesn't this just assume that ad domains are some scarce resource? Ada can be served from a GUID domain just as effectively.

[tentacleuno]

It does not -- it follows the same concept as an adblock list, just being used for a different purpose.

As an example, EasyList includes a lot of GUID domains[0].

[0]: https://github.com/easylist/easylist/blob/master/easylist/ea...