I have two daughters in their 20s and my neighbor has two kids in their late teens. The issue is that today's youth don't fully understand privacy. With all of the social media out there and smart phones putting contacts at their 'fingertips', they are sharing everything immediately and all the time. Just look at Facebook - you can see people posting what they are doing from the moment they wake up until they go to sleep - 'just brushed my teeth, got rid of that dragon breath LOL'
This is the new 'open source' war. Back in the beginning, programmers felt that all software should be free and available to anyone who wanted it. They fought anyone who felt that software should be copyrighted and purchased. Today's youth are the same way, information should be free and available to any one at all times and it doesn't matter what that information is. There are no secrets with social media.