Before Google, I spent the summer building a program that would look at what websites you would go to and what websites other people would go to - and built a collaborative filtering program that helped you find related sites to look at.
Private companies can make a personal profile, direct you to things - they will say - that you would be interested in, but that's their choice not your choice.
When I signed up for Google Plus, it recommended 500 people for me to invite. You know, and once I invited those 500 people I got another 500 people. So it has a huge install base that it can start from.
When Pinterest works well, it helps you find things that are meaningful to you. We want to build a system that helps you do that.
We think of Netflix as a great personalization machine. It understands how you love French midcentury cinema and British murder mysteries, so examples of those pop up in your personalization engine. But you're also getting fed a lot of Netflix content.
Facebook is teachable. If you hide items, you'll see fewer of those kinds of items in the future. Like more items, and you'll see more of those in the future.
I love that thing on Amazon that you can go on and order a book, and you click on it and it says, 'You might also like,' or 'Other people who bought this have bought that.'
We want to get to a point where anything you can think of finding that is video related is searchable or recommended to you on YouTube.
