Fast Company is reporting on a recent US survey that suggests that there is no generation gap when it comes to concern about privacy. Teens want control over their personal information in overwhelming numbers. See: Teens Want More Privacy Online Too | Fast Company.
This really isn't a surprise. Almost everyone, when asked, says they are concerned about their privacy. What really matters is what people do about it. If there is a generation gap, it's the comfort level about carrying out a large portion of their social lives online. But this has spread to the oldies, who are following suit in large numbers.