As a result of technology, more and more of us are interacting with and operating within networks than ever before.

As a result of technology, more and more of us are interacting with and operating within networks than ever before. Facebook is an obvious example of how network externalities are generated by the addition of new users. How has your own life (social, work and school related) been affected by the growing importance of networks? Can you think of any downsides to the trend?