The mobile world is very closed and proprietary just by definition.

The power of the web is not in centralization; it's not in closed systems or anything like that. It's in its open nature, and that's what allowed it to flourish for the first 10 or 15 years.

Twitter is the ultimate service for the mobile age - its simplification and constraint of the publishing medium to 140 characters is perfectly complementary to a mobile experience.

The biggest challenge for open source is that as it enters the consumer market, as projects like WordPress and Firefox have done, you have to create a user experience that is on par or better than the proprietary alternatives.

As the web becomes more and more of a part of our every day lives, it would be a horrible tragedy if it was locked up inside of companies and proprietary software.

We focus on two things when hiring. First, find the best people you can in the world. And second, let them do their work. Just get out of their way.