Monitoring of electronic communication is available to governments and businesses with the ability and will to gather it. And they all do it.
Recording of telephonic conversation was common long before Bush. A court order is needed in the U. S. to use the information.
We use programs like Spybot to keep commercial tracking down to a reasonable level. I can obtain credit information on individuals easily by subscribing to a service (search?). Spying is easy. Don't put unshreaded personal information in your garbage if you have secrets to protect (seizure?). Many people are looking over your shoulder.

'Listening in,' however accomplished, may be search, but the effect of the Fourth Amendment is to prevent the USE of unauthorized information in the courts.