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Task 1: Add Social Contacts	Storyboard	Learnability	Efficiency	Safety	Visibility
	Recall that Joe is looking for Bob, who isn't there to meet him. From the home screen, Joe clicks on People and then finds Bob. By staying in the "now" tab, he can see Bob's exact location on a map.	Pros: Cons:	Pros: Cons:	Pros: No irreversible actions possible. Cons:	Pros: Can view the location information that Bob can see in a glance. Cons:

Task 3: View offers and opt-in to create commercial contacts	Storyboard	Learnbility	Efficiency	Safety	Visibility
	Deals are offered based on proximity. Joe is at the resort and is looking to buy some ski gear. He sees that Rei and Walmart are offering deals. He is more of an REI kind of guy, so he explores that deal, and finds out that Rei is willing to give him 3% off of his purchase if he agrees to share with them whenever he is at an Rei location. He signs up by clicking Sign Up.	Pros: Cons:	Pros: Cons:	Pros: Cons:	Pros: Cons:

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Task 4: View aggregate information of social contacts	Storyboard	Learnbility	Efficiency	Safety	Visbility
	Joe's mom Alice has access to Joe's city-location and wants to view it. She hits People from the home screen and then selects Joe. She clicks on the History tab to see a list of places Joe has been.	Pros: Cons:	Pros: Cons:	Pros: No irreversible actions possible. Cons:	Pros: Cons:

Task 5: Edit social contacts	Storyboard	Learnability	Efficiency	Safety	Visibility
	After the ski trip, Joe wants to stop sending his location to Bob. First he browses to the share by clicking on Bob in his contacts. He sees the Vacation share, and can click on it to view the details of the share. He can then delete it either directly from the details view, or by returning to the listing screen and selecting it from there.	Pros: Cons:	Pros: Cons:
The user can inadvertently delete a commercial contact. No undo mechanism described.	No undo action described.	Pros: Cons:	Pros: Can view all the location-sharing information with the social contact in a quick glance. Cons:

Task 6: Edit commercial contacts	Storyboard	Learnability Learnablity	Efficiency	Safety	Visibility
	By selecting My LocaDeals from the home screen, Joe can see the deals he's currently participating in. Clicking each one displays details regarding that Deal. They can be deleted either from the details view or from the list.	Pros: Cons:	Pros: Cons:	Pros: Cons: The user can inadvertently delete a commercial contact. No undo mechanism described.	Pros: The information seen by Rei is clearly conveyed to the user. Visible information.

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