1. A method for real-time on-line interactive forecasting of an element, the method comprising: identifying a first particular user who has accurately forecast a first element; determining, using a user forecasting accuracy performance based statistical algorithm, at least one second element to present to the first particular user when he attempts to forecast on the first element, the at least one second element being determined on a basis that other different users/contributors who had accurately forecast on the first element had also accurately forecast on the at least one second element; and proactively prompting the first user with the at least one second element when the user identifies a desire to forecast the first element, the proactively prompting of the at least one second element occurring automatically without the first user identifying the at least one second element.