In the information age, there is no such thing as watching from the sidelines. Everyone plays ball weather they want to or not. When you boil it all down, its so easy to invade someones private life, legislation and oversight will mean nothing.
In 30 minutes anyone with half a brain, enough Linux experience to log in, access to Google and a laptop can hack the average Joe and track or pull the logs of almost everything Joe does. Tax Returns, credit cards, every person Joe text's or call's, email's, Facebook's etc...
Unless you do business in a padded lead room surrounded by a Faraday cage, there is no such thing as privacy. As for expectation of privacy, good luck.