You can say what ever you want, there is already to much those social network sites...
I personally even don't use them
I have phone, email, skype, msn that's enough ( I would say too much) for me to communicate and share something with my friends,family....
Now whats the point from those social networking sites??
Every day you get invite to join social network and they all different
What for? To get million friend which you dont know? Or to share all over the world that you bought some new phone or pair of jeans? People even share when they go to toilet and how big shit was.... Social network
Nah