The present invention provides systems, methods, computer program products, and combinations and subcombinations thereof for scoring items based on user sentiment and for determining the proficiency of a predictor and for aiding an investment decision on an item by an individual. The invention includes one or more user devices and a prediction system server having a sentiment rating module, a user proficiency ranking module, a content creation module, and a database. Devices access the prediction system server directly via a communications medium or indirectly through links provided on a third party server.