If Facebook was a country, it would be the world’s most populous nation by quite some way. Over 2 billion people have a Facebook profile – that's almost two in seven of us.

Although Facebook is not a country, it’s clear that the web is facilitating new and alternative understandings of citizenship that speak to a globally connected world.

But if we are internet citizens now, what are our rights, and more importantly, our responsibilities to one another online? And how does our online identity interact with our real-world one?