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.

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.

Privacy is not a static construct. It is not an inherent property of any particular information or setting. It is a process by which people seek to have control over a social situation by managing impressions, information flows, and context.

Give me one other part of history where everybody shows up to the same social space. Fragmentation is a more natural state of being.

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

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

Building new connections is a critical part of building a new economy. The American education system, as flawed as it is, is great for the creative class because of the way it mixes up networks.