If you’ve not seen or heard his talk before, then I really recommend the talk at the RSA given by author and journalist, Evgeny Morozov, in which he presents an alternative view on ‘cyber-utopianism’ – the seductive idea that the internet plays a largely empancipatory role in global politics.
The talk was originally given in 2009, and therefore predates the recent events in the North African and Gulf States.
Best wishes