What gets measured gets improved. – Peter Drucker If you are serious about growing your business, then you can’t throw your precious resources around without knowing their impact on your goals. When you spend money on advertising, you want to know what works and what doesn’t. If you use your resources on getting the message out there, then ultimately you want to see that it has brought you more sales. You want to know your return on investment (ROI). For many successful businesses, their most significant expense will be their employees. Salaries, tax, pension contributions and on-costs (even the coffee they drink) all adds up to considerable use of resources.