(1) A company that collects and sells personal information about individuals. Credit bureaus are prime examples, although other organizations specialize in this service. Also called a "data broker."
(2) An individual who searches for information for clients. Information brokers use various resources including the Internet, online services that specialize in databases, public libraries and books. They also make plain old-fashioned telephone calls. The word "broker" is a misnomer. Information retrieval consultant would be more accurate. Sue Rugge and Alfred Glossbrenner wrote an excellent book on the subject, "The Information Broker's Handbook." See Web search engines and online service.