Research Proposal

I want to research why many people use SNS too much.
Thesedays, many people enjoy using SNS and they waste their time for it.

Why?

My guiding questions are :
1. The reason that people use SNS
2. Psychology of people who update their feeling, pictures..
3. The difference between real life and SNS life.
4. The advantage of SNS and disadvantage of SNS.
My current thoughts are that 'SNS can not help people to maintain their relationship'