Hairdressers, bartenders, personal trainers, financial investors and realtors are tapped into the secret world of so many oh-so desirable and difficult-to-reach consumers. Now we've found a way to access this invaluable information. We recruit and train these cultural watchdogs to check in with their patrons about general trends and to ask targeted questions. A person who wouldn't dream of doing a survey wouldn't think twice about confiding to the person who cuts their hair or helps them invest their money.