[Myrddin]

Phone companies have a record of the originating phone number, terminating phone number, start of call and duration of call. They don't have any of the content unless a wiretap is authorized by court order. The call records are used for billing the caller. Period. That is the sum total of the business interest in the information. The ISP will need a court order to take more. If they don't have one, a defendant will be sitting pretty in claiming the "evidence" was illegally obtained in violation of his 4th amendment rights.

[redgolum]

Most ISP’s can and do record where you go. The record companies use it to attack illicit downloads.