FRANKNOTE

'People have no idea how much of what they probably consider their private information is readily available to government,' says Susan Brenner, a University of Dayton law professor who advises the U.S. Secret Service on technology and privacy. The letters, she says, raise the question: 'How do we balance law enforcement's needs with what's left of privacy in an age where technology permeates everything?'

9,254 letters served in 2005