In this era of increased accountability, marketing metrics are key. W-O-M is tough to quantify, but I admire BzzAgent’s effort. They measure success by dividing sales by total conversations.
However, W-O-M efforts vary because every input varies.
Net Promoter score is another good way to try to land on a measurement. It measures a W-O-M program’s success by looking at how many people would
recommend your brand or product to a friend.