If people are passionate about your product, whether it's because they're hating or loving it, those are both good scenarios.

Both my wife and I have a lot of compassion for animals in general.

The two things I use the most are the MacBook Air and my iPhone. Those are my two most-used gadgets that are dented, scratched and smashed.

Positive culture comes from being mindful, and respecting your coworkers, and being empathetic.

We hired a CSR person at Twitter, years before we hired our first sales person, to make sure we had a culture and impact of doing good.

Doing startups is all about making mistakes.