I call BS on the comments that say doing what you suggest is giving up... To me, "Liking" something implies expressing your opinion publicly, probably via Facebook. When I receive a job application, the first thing I do is check to see what the person has publicly posted. That's not surveillance. Before the general population starts to worry about surveillance, they need to think about the public image they are portraying online. I can't hire someone who posts stupid shit publicly. It could damage my business if my clients look them up.