The problem isn't telling people about it---again, rebels have communicated with each other since there have been governments to rebel against. The exact means

The problem isn't telling people about it---again, rebels have communicated with each other since there have been governments to rebel against. The exact means of communication is irrelevant (obviously, since revolutions have happened in the age of print, telegraph, telephony, television, and now the Internet). The problem is motivating ordinary people to actually take action, and that depends on socio-economic factors that have nothing to do with technology. What you're seeing in the Middle East is how business has been done there for thousands of years. It's how these countries change their government in the absence of any stable democratic traditions. Or rather, it is their democratic tradition to change regimes this way.