Is it good or bad to make money from selling user information (like Facebook and Google do)?

Requirements:

At least 1200 words paper about Informatics.

Three main reasons and at least three resources/citations

This is the template for the paper.

Introduction 

My Claim  

Reason 1

Details

Counter-arguments to my reason

My Rebuttal         

Reason 2

Details

Counter-arguments to my reason

Rebuttal

Reason 3

Details

Counter-arguments to my reason

Rebuttal

Connections 

Conclusion 

Citations