[notyourday]

At scale? Margin of error at best. I will tell you what my interests are by vising web properties that cater to them in that specific time. You deciding to keep showing me ads for a Nespresso machine when I'm reading about circular saws is idiotic.

[edmundsauto]

That doesn’t pass the sniff test. Would you say that in general, you wouldn’t expect a difference in results if you sold Taylor swift albums to white suburban women in Iowa, versus black urban men in Atlanta?

[notyourday]

You know what would blow both of those out of the water? Selling it to those that have indicated that they are interested in Taylor Swift as white suburban women in Iowa do not buy Taylor Swift albums. They buy mom jeans. Instead they are getting ads for Taylor Swift.

[edmundsauto]

How do you increase your market past people who have already liked Ms. Swift?

The argument still stands - just replace TS with mom jeans. My point wasn't actually about Taylor Swift marketing - it was that demographic targeting is a reasonable way to identify an audience. Those mom jeans are not going to sell very well in a younger, urban demographic compared to Iowa.