Richard Lanham writes in his seminal book, The Economics of Attention:
The most obvious new group of attention economists may be the computer-human interface designers. This branch of information design subsumes all the efforts at Web site design, amateur and professional, which we encounter on our daily voyage through cyberspace. The Internet constitutes the pure case of an attention economy. “Eyeballs” constitute the coin of the realm….the economics that matters in this new theater, is design.
Quoted by Bud Parr in his blog post/article, How Good Design Can Lead Us To Freedom.