Use your own experiences and pain points to identify an opportunity. Be arrogant thinking you can do it better than others.

I think Twitter is great.

The audience might not be the size of Facebook, but how much time can you spend online and think, 'What did I just learn?

Profit per se is not my motive.

My real big Internet claim to fame is the fact that I was first to jailbreak the iPhone.

People are not good at expressing their frustration. The best way to listen to the customer is through metrics.

You need to be surrounded by good advisers, but you also need to trust your instinct.