Inferring insights from enhanced user input

A method and associated systems for inferring insights from enhanced user input. A computerized messaging system identifies a user operating a mobile, location-enabled, "scribble" device and associates the user or the device with a domain of interest or with other metadata that characterizes the user. When the user enters an ad hoc "scribble" input via the device, the system automatically tags the input with the user's location, with sensory data received from one or more sensor devices, and with ancillary data received from extrinsic data repositories. The system may then consider this ancillary and sensory data in order to identify or infer rules or insights associated with the user and the scribble. These rules may then be used to identify targeted, user-specific steps to perform in response to receiving the scribble, where these user-specific steps accommodate a user preference without exposing confidential user information to a public data repository.