People, companies and even governments generate an enormous amount of data about themselves every day. From ordering a latte without foam to negotiating a major contract, there is a growing perceived need to collect and mine the resulting data for useful insights about markets, customers, competitors or competitive threats. How can we do this? What legal issues surround the collection of this data? What issues surround the use of the data? If your company is using big data, what should it be concerned about? How does it stay out of trouble and out of the headlines?