Blame facebook, Twittter, Likeme.net, Myspace and all the rest. flickr.com/photos/theeponymousoneAre you addicted to the Internet? Your family knows.The social media sites -- all the rage of the Internet the past few years -- are eating into the time families spend together, according to a new survey from the Annenberg Center for the Digital Future. The University of Southern California institution reports this month that 28 percent of Americans it interviewed last year said they have been spend