There's a lot of research inherent in the accounting business. Accountants needs to keep up on tax law changes, SEC filings and lots of other business content just to do their jobs. So anyone doing market research of the accounting business has a head start in terms of available content online. There's so much information available on the business of accounting, surveys of accountants, etc., that the best way to begin research is to use a business research search tool. This way, you can get a top-down view of the information available and how it fits your needs. Next search for for the segment of the accounting business in which you are most interested.