Wikipedia, a nonprofit, is an enormously popular website but has managed to operate without advertising. And, you know, maybe it's a little simpler than Google and YouTube, but it does show there's another way.

When you decide to like something, I mean, you may feel you're sort of innocently putting out your preferences, but actually you're delivering something of enormous value, which is indicating that, you know, you'd essentially like to be advertised to by this company.

If you have a disease and suddenly start getting ads for cures for that disease and it's an embarrassing disease - all that kind of stuff it just gets into that zone of autonomy or privacy where you feel a sense of freedom to be who you want to be.

In fact, the big steps forward for advertising, especially after World War I were when government just began employing the tools of advertising for its own purposes to get people to join the army and other things.

I think Google is the most successful attention merchant - profitable attention merchant in the history of the world, most successful advertising-only based company - most profitable. They started a very idealistic, beautiful company in many ways, but they didn't have a business model.

Now, he doesn't control the media, but Donald Trump has been incredibly successful in having his face appear everywhere. You cannot go a day without seeing that face somewhere maybe 10 times.

Trolling is an ancient problem. It's been around as long as there has been media.