Customer: IT is completely useless! I’m getting PORN ADS on my work computer!? This is ridiculous!!!

Friend: Oh that’s not good, perhaps your computer has a virus of some sort let me take a look!

Friend takes a look and sees that the porn ads were all provided by google ad service, they weren’t related to a virus.

Friend: so, you don’t have a virus, but so that you know google gathers metrics on the sites you visit so that it can target ads at you better. Looks like that’s what’s happening here.

Customer: .............