Online Communication and Social Networking

these have had a profound effect on daily life and even on major political events (good current example to start off the book: Egyptian govt just shut down Internet in hopes of slowing/stopping unrest and Egyptians have found a way around this somehow using cells and twitter, etc); ideas and info are communicated in very different ways today. Some concerns include social isolation; cyberbullying etc; what efforts are being made to address these issues and what are the ramifications.