A machine may generate and store a correlation among multiple identifiers of the user that enable access to an application through multiple systems. For example, the user may have a first identifier for using a first social network system, and a second identifier for using a second social network system, and the machine may generate and store a correlation between the first identifier and the second identifier. The machine may identify the user based on the first identifier and access a database that stores the correlation. The machine may then access a configuration of the application based on the correlation and configure the application in accordance with the configuration. The machine may generate a visual representation of the configured application, provide the visual representation to a device of a further user, receive an indication of an opinion of the further user on the visual representation, and present the indication.