Sprint served 8 million customer GPS coordinate requests to law enforcement in one year

Sprint Nextel provided law enforcement agencies with its customers' (GPS) location information over 8 million times between September 2008 and October 2009. This massive disclosure of sensitive customer information was made possible due to the roll-out by Sprint of a new, special web portal for law enforcement officers.

If you build it, they will come... and infringe on your privacy.