[kredd]

I just opened Facebook to see what I’d see on the app, and just a couple of scrolls gave me: Planet Fitness, Expedia and a bunch of airline ads.

People will always complain how something doesn’t work, how they pulled out their ad money and etc. But then you see ad spend growth on every big platform.

[riskable]

It's a simple equation: Money spent on ads will go where the users (ears and eyeballs) are. By providing fine-grained targeting an advertising platform can extract more money from "the long end of the tail" which is where most of the money lives.

The rule for selling ads is: Know your users.

The rule for buying ads is: Know their users.