Google's AdWords, they allow you to bid on words that people will type into the search engine, and they cost more or less. For example, I think mortgage refinancing can cost - now, it's probably hundreds, maybe thousands of dollars. So, in other words, they are allowing you to bid on what people are going to type, and that is the AdWords program. So you own certain terms, and then your ads show up as opposed to someone else's.

I think you spend 50 percent of your mental energy trying to defeat ad systems.

Every time you click on a like button on another site, you've told Facebook that you're doing that. And so therefore advertisers know who their fan base is.

There is this inherent human instinct that the usual way you control trolling is you force people to use their real identities. So there's less trolling on Facebook, for example.

What's so interesting about the internet - I keep saying this - is the web has gotten worse over the last five years as opposed to better.

Starting with radio, starting with television, we got used to this idea of stuff being free as long as you just watch a few ads.

There's always people - it doesn't take many - who have a different psychological makeup than most of us who really get joy out of provoking. They don't always believe the things they say, they just like to watch people go crazy. You know, I knew people like that in elementary school - bullies of one kind or another.