I've followed Brian Solis for a long time and have read both his books: What's the Future of Business and The End of Business as Usual. If you are in any way shape or form interested how Social Media impacts EVERYTHING - not just business - both are a must-read and well worth your time.
The cartoon above links to slide share and shows a quick summary of some of Brian's and his design collaborator, Hugh MacLeod aka @gapingvoid comments on social media insights. My favorite is slide 20.... the prosa summary is:
ignorance + arrogance = irrelevance. (Nuf said)
Remember that for all eternity!