When you are on the internet, what you are doing is your own decision and on your own time. I think what we search and what we do should be private and not have anyone watching what we do. It should be illegal for people to watch what we are doing on the internet.
Privacy on the internet protects the personal information of a user. That information if not protected can be used for malicious intent, such as stealing their identity and stealing money. In addition to that, privacy on the internet allows oneself to express themselves with less fear of their public persona being demonized or mistreated.