Against.

Reason 1. First of all it's not true that one can't make real friends in online.
Reason 2. I've made some great friends through online that are more close to me than real life friend.
Reason 3. We can trust the person which we don't even know by making friends online.
Reason 4. Online friends can be more generous than real life friend.
Reason 5. Yeah sometimes peoples find some fraud friends but not all of them are bad, there might be some friends waiting in the online who can change your life.

So I'm extremely against in this topic.