There is perhaps no greater investment than one made for your workforce. The ability to unlock the potential of the people that work for you has a greater ROI than any technological upgrade or cost savings program. This is especially the case for your sales force. As a result, consultants and think tanks invest large amounts of time researching the best way to motivate salespeople -- in many ways, sales motivation is the holy grail of revenue growth and productivity. Articles are published every year, each one claiming to have found the answer to what really motivates salespeople.