The Spitzer episode shows that privacy is essentially dead now.

We have no privacy in our financial records--the banks ratted him out to the IRS.

We have no privacy on the phone--Big Brother was listening to his calls.

We have no privacy as to consensual acts between consenting adults.

Update:

This is from the search warrant application:

7. As demonstrated below, the evidence obtained
during this investigation includes, among other things,
statements of a confidential source who worked with the Emperors
Club; statements of an undercover officer; more than 5,000
telephone calls and text messages intercepted pursuant to court authorized wiretaps; more than 6,000 e-mails recovered pursuant
to court-authorized search warrants; bank records; travel and
hotel records; and physical surveillance.