But even though the e-learning market is expected to be worth $325 billion by 2025, the reality is that only a tiny fraction of online course creators make a satisfying income. If you want to grow your income and impact as a content creator, you need to keep your customers and followers satisfied. According to a study, B2C customers who complete a feedback survey spend 131% more over 12 months than those who don’t share any feedback. However, what’s even more interesting is the mere measurement plus effect, which states that an open-ended, positive question can result in a 32.88% increase in customer spending compared to closed-ended surveys.