[Terr_]

> how much value personalized ads provide

I think it's important we break this question apart by "value to whom."

1. Consumers barely notice ads for things they don't care about.

2. Sellers will see it as percentage inefficiency in their spending, wrapped up in other reporting noise.

3. Ad-networks on the other hand, may view a not-interested impression as a lost chance to make revenue by putting something "better" in its place.

[cwillu]

Alas, they don't view their methods through the lens of the impressions they lose by pressuring people into developing and using adblockers