I suspect there's a lot of validity to the premise that big companies aren't going to attract entrepreneurial talent.

Take care of yourself: When you don't sleep, eat crap, don't exercise, and are living off adrenaline for too long, your performance suffers. Your decisions suffer. Your company suffers. Love those close to you: Failure of your company is not failure in life. Failure in your relationship is.

Marketing, when done well, is about story telling.

After high school, I enrolled at the University of Nebraska at Lincoln, but I stayed only a year and a half. I felt college was a waste of time; I wanted to start working.

I tried to be a ski bum when I stepped away from Twitter, and I wasn't a very good skier.

Every major communication tool on the Internet has spam and abuse problems. All email services, blogging services and social networks have to dedicate a significant amount of resources and time to fighting abuse and protecting their users.

Change the world. Build a business. Have fun.