1. A method comprising: analyzing, by a hardware processor, a behavior of a user in a virtual world based at least on control of an avatar in the virtual world to determine a behavioral category for the user, wherein the analyzing includes determining a degree of similarity between the user in a real life and the avatar in the virtual world, wherein analyzing the behavior of the user further comprises: determining a number of identities the user presents in the virtual world; determining a degree to which the avatar's identity visually resembles the user's identity; and determining a degree to which the avatar appears to be photorealistic; customizing, by the hardware processor, a user-interface of the virtual world based at least on the determined behavioral category, wherein the user-interface is customized by configuring image-capture-or-sharing tools, avatar-appearance-editing tools, or both in the user-interface; and storing, by the hardware processor, information based at least on the customized user-interface.