There are now more than a billion people online, many using the internet to engage in some kind of social activity. Over 4 petabytes of unique virtual content is generated a month, and incase you’re not sure, that’s quite a lot.
There’s virtual communication like email, instant message or video. People belong to virtual communities like social networks, image sharing or interest groups. And in these communities they use virtual identities to share virtual content: writing, photography, desi……
