1. A method comprising: determining, by a computing device associated with a user of a social-networking system, that a custom-touch-gesture feature should be turned on and enabling the custom-touch-gesture feature for the computing device, wherein the determining is based on usage of the custom-touch-gesture feature by at least a threshold number of the user's social contacts within a specified social degree of separation in the social-networking system; identifying, by the computing device, a touch gesture on a touch screen of the computing device as a particular one of a plurality of custom touch gestures of the user stored on the computing device, each of the custom touch gestures having been recorded and assigned to a particular one of a plurality of user inputs by the computing device in response to an instruction from the user; determining, by the computing device, the particular one of the user inputs corresponding to the particular one of the custom touch gestures identified as the touch gesture made by the user; and executing, by the computing device, one or more actions based on the particular one of the user inputs.