We have been a long-time Jigsaw user and were fairly happy with it. Recently we added Data.com Enterprise Clean in order to standardize our Account data (location, industry, revenue, etc.). Our match rate on Accounts is only 58% and we have to tweak some of the data (e.g. website, name, etc.) to get a match, which is painful. Their Industry data data seems to be highly inaccurate, but the NAICS codes (from D&B) are consistently accurate and we are using them rather than the industry. We opened a support ticket because the website they have for The Home Depot was incorrect and they said that there isn't anything they can do about it except report it to D&B because they are providing that data; however, Hoovers.com (owned by D&B) has the correct website. We're losing patience with these guys.