Cell call lists reveal your location

The Chicago Sun-Times reports:

Imagine you're living in a shelter for battered women.

And the address is secret.

Or, you're a government informant hiding in witness protection.

Does it worry you that someone could pay Internet brokers to find your location -- within 500 to 1,000 feet -- based on your cell phone calls?

The Chicago Sun-Times on Wednesday obtained e-mails of Internet brokers offering to sell information on the location of cell phone calls.

Here's more follow up on the cell phone story the Chicago Sun-Times broke recently.The question is how is this legal when someone doesn't sign off on releasing their cell phone records? You couldn't get away with this with land line records.