Systems and methods for determining efficiency-of-use scores related to uses of a product by two or more users may implement operations including, but not limited to: computing at least one of an efficiency-of-use score and an environmental impact quantification according to data associated with a use of a physical product by a user over a period of time the user is indicated as having control of the physical product; and publishing the at least one of an efficiency-of-use score and an ecological impact quantification associated with the use of the product by the user to a social media interface.