Personalization is based on a bargain. In exchange for the service of filtering, you hand large companies an enormous amount of data about your daily life--much of whic you might not trust your friends with.

In a broadcast society, there were these gatekeepers, the editors, and they controlled the flows of information. Along came the Internet and it swept them out of the way, and it allowed all of us to connect together, and it was awesome. But that's not actually what's happening right now.

Eric Schmidt likes to point out that if you recorded all human communication from the dawn of time to 2003, it takes up about five billion gigabytes of storage space. Now were creating that much data every two days

If you only have one shot at writing a headline, there's a lot of pressure.

The algorithms that orchestrate our ads are starting to orchestrate our lives.

If you Google some sites about the link between vaccines and autism, you can very quickly find that Google is repeating back to you your view about whether that link exists and not what scientists know, which is that there isn't a link between vaccines and autism. It's a feedback loop that's invisible.

It feels great to have your own views reflected back to you, and you feel so right, but actually it's very dangerous. Because to make good decisions, you need to have a clear view of what all the options are.