Prediction: By 2020, the people left behind (many by their own choice) by accelerating information and communications technologies will form a new cultural group of technology refuseniks who self-segregate from 'modern' society. Some will live mostly 'off the grid' simply to seek peace and a cure for information overload, while others will commit acts of terror or violence in protest against technology.
An extended collection hundreds of written answers to this question can be found at:
http://www.elon.edu/e-web/predictions/expertsurveys/2006survey/ludditesoffthegrid.xhtml