"I'm not mad. I'm proud of you. You took your first pinch like a man and you learned two great things in your life. Look at me, never rat on your friends and always keep your mouth shut."

This will have no effect on RIAA cases. I believe the RIAA investigators use an IP address to identify an alleged lawbreaker, then grabs their hard drives and looks for evidence of file sharing, illegal downloads, etc. You cannot simply convict someone for illegal online activity simply because they have the same IP address as an alleged abuser. In this context, an IP address is like a license plate. Example: someone is involved in a hit-and-run. The cops track the license plate to your house and checks your car for damage.