The ultimate scarce resource of today: Human attention, AKA "Eyeball hours."

And Captology, I had to look that up!

Captology is the study of computers as persuasive technologies. This area of inquiry explores the overlapping space between persuasion in general (influence, motivation, behavior change, etc.) and computing technology. This includes the design, research, and program analysis of interactive computing products (such as the Web, desktop software, specialized devices, etc.) created for the purpose of changing people's attitudes or behaviors.

The science of marketing and interaction design as the science of capturing attention..