This is ridiculous.
Click to read the story, but the gist is... a parent with a troubled teen apparently violated privacy laws by listening to a conversation on an extention - during which she discovered the teen was complicit in a purse-snatching... or at least knew who the perpetrator was. Since the information was obtained via "illegal" eavesdropping, it is inadmissible.
Give me a break. Since when does your child have privacy rights when using YOUR phone? I don't get it.