1. A method for identifying influential users among a group of users associated with a communication network, the method comprising: selecting two or more ranking models and providing scores to the users in the group using said ranking models based on usage data of the users; calculating a weighing factor for each of the selected ranking models; generating an aggregate score for each user using the weighing factor and the score provided by each one of the selected ranking models; and identifying the influential users based on the aggregate score among the group of users.