How do social networking sites benefit social life?

Answer 1

I have a debate on Monday and I am speaking on how do social networking websites benefit out social life.

Please give me some good points on how do they benefit us. Make sure that it's only about social life.

Also, since it's a debate, my *opponent will speak* on how do social networks spoil our social life. So what are some good points which my *opponent* will tell? How can I oppose his points.