by B2B Marketing Directions Data has become the lifeblood of modern marketing. It now touches almost every aspect of the marketing function. But using the wrong data (or the right data in the wrong way) can lead to ineffective and costly decisions. Here's one mistake marketers need to avoid. Fueled by the explosive growth of online communication and commerce, marketers now have access to a huge amount of data about customers and potential buyers. Astute marketing leaders have recognized that this ocean of data is potentially a rich source of insights they can use to improve marketing performance. Therefore, many…