If you have a native monetization system where the atomic unit of content is the ad unit, that scales down all the way to a small screen experience. That's why Twitter is performing so well on mobile.

Board meetings should not be for the benefit of the board. They should be for the benefit of the CEO and the senior team.

I generally blog between 5:30 A.M. and 7 A.M. I will from time to time add something during the day, but for the most part blogging is an early morning activity for me.

Foursquare's adoption of a game dynamic when it launched is a particularly clever implementation of a social hook.

Most adults I know start their Internet session at Google, and most kids I know start their Internet session at either Facebook or MySpace.

It's upsetting to me that you have to be a millionaire to invest in your friend's start-up.

I believe the mobile OS market will play out very similarly to Windows and Macintosh, with Android in the role of Windows. And so if you want to be in front of the largest number of users, you need to be on Android.