Along with planes, running water, electricity, and motorized transportation, the internet is now a fundamental fact of modern life.

Social networks are like grease - in some cases, gasoline - for our personal business networking machines. If you aren't plugged in, you will be out-done by better-connected, hyper-networked colleagues and competitors.

For higher-level execs with greater public visibility, social networks need to become as good at filtering as they are at connecting.

The things that make us safest from others make us least from ourselves.

Business culture operates differently in different cities around the world. But I don't think it's possible to design one system that incorporates all social norms for networking. Human beings are just too diverse.

What happens online is you are constantly dealing with invisible audiences.

And I think that’s a lot of the reason why when you start to fragment your audience, you start to think about what you’re looking for, you’ll go to different spaces, and it parallels what we do as adults. You go to different bars when you’re in the mood for different things. You see different people when you want to go listen to music or when you just want to have a quiet drink with a couple of friends.