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

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.

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

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

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.

Neither privacy nor publicity is dead, but technology will continue to make a mess of both.

LinkedIn is very good for browsing relationships and hooking into your contacts' networks. It re-connected me with high-level execs I hadn't talked to for some time, who then helped me close various deals.