Useful for market research, entrepreneurs, job seekers, and finding healthcare professionals. IMPORTANT: After selecting one of the "Available Databases" listed on the ReferenceUSA website, accept or click through security certificate warnings if they appear and proceed to ReferenceUSA. Different browsers display different warning messages. At the RefUSA site, use CUSTOM SEARCH tab to limit your search results to geography or other criteria. Data on 24 million U.S. businesses and 50,000 new US. Businesses. 10 years worth of historical business data shows changes in various industries for over the past 10 year. Compare their market share to one another and see where they are trending for the future. Look up the number of similar businesses in a target area to check your competition, credit rating, & consumer lifestyles of potential customers. JOB SEEKERS: Over 2 million job postings and internships in the U.S.! Research companies you may want to work for. See JOB HELP for salaries.