American marketing services company Acxiom estimates it holds 1,500 pieces of information on every American

"For decades, data companies like Experian and Acxiom have compiled reams of information on every American: Acxiom estimates it has 1,500 pieces of data on every American, based on information from warranty cards, bridal and birth registries, magazine subscriptions, public records and even dog registrations with the American Kennel Club."
Source: New York Times, 30th July 2009