A method to create and to link user profiles in a social networking system may include dynamically determining a current progress level of a first user with respect to a goal of the first user based on data received from a sensor or user input. The method may include, in response to determining that the current progress level of the first user satisfies the threshold progress level with respect to a goal of the first user, changing a user profile of the first user to include an indication that the first user has reached an achievement level with respect to the goal of the first user. The method may include selecting the user profile of the first user of the social networking system from multiple user profiles of other users of the social networking system based on the indication and presenting the user profile to a second user.