Nancy Baym, writing for Social Media Collective, on the idea of a universal Facebook login being regarded as a "passport" for the internet:
But we should think long and hard about its implications. Except for nations that block the internet or some of its sites (hello, China!), the internet has thrived on being a set of domains across which we could travel without passports. Do we really want Facebook citizenship to become a requirement for accessing other domains? Do we really want an internet where we not only need a passport, but a passport from a nation – any nation – owned by a privately-held corporation? Either social network “citizens” need rights beyond emigration or we need to push back hard. We must be the builders of our own futures, not subjects in a nation motivated by profit.
It's a good read, go check it out.