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1. Users might have really different mental models when using applications. In the task of finding information about Joe that Bob could see, phase 1 users would click on Joe's photo to see the information that Bob could view about Joe. However, phase 2 users clicked on Bob to view the same information. We identified that different users model the direction of the flow of this information differently. We should try to include both of the designs to accommodate our app to different users. For example, providing multiple ways to view how others see about your location information.
2. All three users found that the information scent provided by the labels of the tabs (especially the "What") was not very helpful.We got lots of precious feedback from users in terms of the functions that they would like to see and the problems in UI design, we are trying to re-design our application to include all the good design ideas and will keep doing paper-prototyping to generate the final design.