There are studies which say targeted advertising is just 4% more effective than non-privacy-invading advertising.[1] [1] https://techcrunch.com/2019/05/31/targ

There are studies which say targeted advertising is just 4% more effective than non-privacy-invading advertising.[1] [1] https://techcrunch.com/2019/05/31/targeted-ads-offer-little-extra-value-for-online-publishers-study-suggests/ https://techcrunch.com/2019/05/31/targeted-ads-offer-little-...