> But the ads I see are way off target. The two sides see "off target" quite differently. If the baseline is 0.1% accuracy, and an ad platform offers 1% accura

> But the ads I see are way off target. The two sides see "off target" quite differently. If the baseline is 0.1% accuracy, and an ad platform offers 1% accuracy, then you see relevant ads showing up at 1 in a 100 rates rather than 1 in a 1,000 rates. You still feel like you're being spammed by useless nonsense. As an advertiser, my cost to reach my audience just dropped by 90%.