The New York Times discusses the issue of online anonymity:
Now, it seems, it is the place where anonymity dies. […] Women who were online pen pals of former Representative Anthony D. Weiner similarly learned how quickly Internet users can sniff out all the details of a person’s online life. So did the men who set fire to cars and looted stores in the wake of Vancouver’s Stanley Cup defeat last week when they were identified, tagged by acquaintances online.
The collective intelligence of the Internet’s two billion users, and the digital fingerprints that so many users leave on Web sites, combine to make it more and more likely that every embarrassing video, every intimate photo, and every indelicate e-mail is attributed to its source, whether that source wants it to be or not. This intelligence makes the public sphere more public than ever before and sometimes forces personal lives into public view. […]
This erosion of anonymity is a product of pervasive social media services, cheap cellphone cameras, free photo and video Web hosts, and perhaps most important of all, a change in people’s views about what ought to be public and what ought to be private. Experts say that Web sites like Facebook, which require real identities and encourage the sharing of photographs and videos, have hastened this change. […]
This growing “publicness,” as it is sometimes called, comes with significant consequences for commerce, for political speech and for ordinary people’s right to privacy. There are efforts by governments and corporations to set up online identity systems. Technology will play an even greater role in the identification of once-anonymous individuals: Facebook, for instance, is already using facial recognition technology in ways that are alarming to European regulators.