In a financial services organization, a client relationship manager is analyzing feedback mechanisms to improve customer satisfaction. The manager identifies three primary feedback channels: surveys, direct interviews, and social media monitoring. Each channel has a different impact on understanding customer needs. If the manager decides to implement a weighted scoring system to evaluate the effectiveness of these feedback mechanisms, where surveys are assigned a weight of 0.5, direct interviews a weight of 0.3, and social media monitoring a weight of 0.2, how would the overall effectiveness score be calculated if the scores from each channel are as follows: surveys score 80, direct interviews score 70, and social media monitoring scores 60?