Part of our brand is that we're pretty understated in what we do. If you look at other technology companies, they might preannounce things, and it will be a couple years before they really happen, and they don't happen in the way they said they would.

At Facebook, we are squarely in the camp of the companies that work hard to charge you less ... I think it's important that we don't all get Stockholm syndrome and let the companies that work hard to charge you more convince you that they actually care more about you.

We help Chinese companies grow their customers abroad. They use Facebook ads to find more customers. For example, Lenovo used Facebook ads to sell its new phone. In China, I also see economic growth. We admire it.

For the first time we're allowing developers who don't work at Facebook to develop applications just as if they were. That's a big deal because it means that all developers have a new way of doing business if they choose to take advantage of it. There are whole companies that are forming whose only product is a Facebook Platform application.

On the Internet, companies are scale businesses, characterized by high fixed costs and relatively low variable costs. You can be two sizes: You can be big, or you can be small. It's very hard to be medium. A lot of medium-sized companies had the financing rug pulled out from under them before they could get big.

I'm the non-executive chairman of nine or so major companies, and on the nine companies, it's a little trying because you jump from one industry to another, as the case might be. But one had the reasonable knowledge of those nine activities, and it's been an exciting job.