When I'm introspective about the last few years I think the biggest mistake that we made, as a company, is betting too much on HTML5 as opposed to native... because it just wasn't there. And it's not that HTML5 is bad. I'm actually, on long-term, really excited about it. One of the things that's interesting is we actually have more people on a daily basis using mobile Web Facebook than we have using our iOS or Android apps combined. So mobile Web is a big thing for us.

If you just work on stuff that you like and you're passionate about, you don't have to have a master plan with how things will play out.

I think people tend to be worried about every new technology that comes along.

The world isn't set up equally, and the first billion people using Facebook have way more money than the rest of the world combined.

I like to pride myself on thinking pretty long term, but not that long term.

I got my first computer in the 6th grade or so. As soon as I got it, I was interested in finding out how it worked and how the programs worked and then figuring out how to write programs at just deeper and deeper levels within the system.

Advertising works most effectively when it's in line with what people are already trying to do.