For the average American citizens, the notion of their privacy has wiped out. Any information you put out into cyberspace could come back to bite you in the ass. Retail stores sell your purchase history to third parties without your permission.
Social media sites, storing information and search engines which act as data mines, could later be accessed by the concerned government authorities and could be used against you in court.
The Feds have no problem letting companies collect and manipulate peoples’ personal information because it makes running a surveillance state that much easier to do.
Whenever the government wants to know what weird shit you are up to on the Internet, guess what they are going to find out? You can thank Google, Facebook, Walmart and all the other megacorps for that.