If we compare the two, Facebook is currently a superior place to market a product like Slide. Twitter is more like a general distribution agent. It's like broadcast radio.

PayPal once rejected a candidate who aced all the engineering tests because for fun, the guy said that he liked to play hoops. That single sentence lost him the job.

Technology has come a long way since PayPal.

Mobile is the perfect example of what is enabling economic growth in the technology sector.

You can have successful teams where people hate but deeply respect each other; the opposite (love but not respect among team members) is a recipe for disaster.

Facebook is so ubiquitous now that it's like another manifestation of the web itself.

I've been developing mobile for years before anybody else really thought it was that important.