From the point of view of a naive user, there are new types of interactions that can have massive social implications: e.g. changing Facebook relationship status. At the moment, the notification of that status change to the user is pretty minimal. It does not, for example, make clear that that change will be propagated to, say, over 500 people, and all of their contacts.
There may be people who are more concerned about their social standing than whether they've accidentally formatted a volume or not.