When my dad was in Vietnam, we lost a parent for a year. Thank God we didn't lose a parent for good.

It's not easy for an entrepreneur to find the time to blog. But for those who do it, it is a great tool to communicate with the various stakeholders in their business and build a reputation for thought leadership.

My venture investing career has three phases, all roughly 6-8 years long. The first, at Euclid, was software to Internet. The second, at Flatiron, was Internet to bubble. And the third, at USV, has been web 2 to mobile. I have always used a new firm to denote a new investment phase for me. Throw away the old. Start with the new.

The strategy of Tumblr is very elegant.. The atomic unit of user experience is the same as the ads.

If you have an idea that you can't get out of your head, do a startup. Otherwise join a startup.

Facebook is not an unstoppable juggernaut. There are a lot of other things people can do on the web.

The companies that do the best job on managing a user's privacy will be the companies that ultimately are the most successful.