Friend or Stranger?

These days a lot of social network such as facebook,friendster,twitter,myspace and so on.And i believe that 80% of MMU student had account on there social network and because of that they can gain a lot of international or local new friend that they may or accept any random friend request that is they might never meet.Its a good thing to have a lot of friend but the question is..

Are they friend or stranger to us?

We never meet them or know them in life,we only know how they look by the photo they had uploaded (if they upload they real photo instead uploaded some random someone else photo and said that its them) and dont be shocked that somehow we can be really close to them or even trust them more than trusting friend that we can see everyday.
That person might end up becoming a scary pervert stalker ( i had my own experience on this)

But it doesnt mean all of them is a bad person,some of them are really nice but they more comfortable having a network friend since they probably shy to having a real conversation.

So,what do you guys think on this?