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When the food arrives, she hits the button and everyone gets another email "Katie says the food's here. Hope you are still hungr-y". Everybody comes over, pays up, and enjoys the deliciosu Thai food. They are real happy and full.
Designs
Design 1: 
- First, Katie needs to invite friends to an order. She can do so by searching through her Facebook friends via dropdown menu or by typing in an e-mail address of the desired person. If desired, she can choose a restaurant or type of restaurant from the searchable drop down list of restaurants in her area. In this case, she chooses “Thai food”. She can also optionally add a message to send along with the invitation. She can view the people she's added in the “friends invited” box on the right side of the screen.
- Next, she is directed to the page to choose a restaurant. Upon accepting the invitation, her friends can also view this screen, and their current status will be displayed in user info tab on the left. This will show what friends are currently viewing the page, which haven't responded yet, and those who declined. Tim really doesn't want Mexican food tonight, so he filters out Mexican restaurants. Janet wants Thai food as well, so she also selects restaurants with Thai food, and the multiplier next to Thai food is increased to show that multiple people favor this option. As Katie and her friends are offering up suggestions about food, a list of constraints is displayed on the right. Once everyone has agreed on a restaurant, they can select that restaurant as their current restaurant (option on list of restaurants) and proceed to order.
- Now, everyone is looking at the same ordering page. They can clearly see who has chosen food and who hasn't on the right side of the screen. Each food item will have a “me too” button near it. In addition, on the right side of the screen will show a list of people willing to share items. For example, when Janet requests a half order of Duck Choo Chee, her request will show up on the right as “Janet is willing to share Duck Choo Chee with one other person.” Tim was slow in choosing his food, so his name remained highlighted in red for quite some time.
- Finally Katie gets to finish her order. She records a tip amount in hungr and everything is sent over to Foodler for finishing. She double checks everything and submits the order. She can also view an itemized list of what Janet, Tim, and Todd owe her. When food arrives, she can push the painfully large “food is here” button.
- At this point, Janet, Tim, and Todd are redirected to a page showing how much they owe, what they ordered, and where and when the food will arrive.
- Lastly, an optional perk would be to show users past orders so that former organizers can keep track of who owes them money.
General Comments on Design 1:
Learnability: To start up an order, it is quite natural for people to search through list of Facebook friends, as everything is connected to Facebook nowadays. In addition, the general ordering interface will be very similar to that of Foodler (and can be used exactly as such at a base level). Our interface will simply provide simple add-ons that people can choose to use (“me too” “I want to share”). In addition, payment will be the same as usual for online food ordering.
Efficiency: Linking up to Facebook will allow suggested completions of names, as will providing a list of restaurants. This will help organizers suggest things quickly and easily. Selecting restaurants will be facilitate by filter options embedded in the menu (“want” “do not want”) next to restaurants and food types. In addition, allowing people to order simultaneously cuts down on menu reading time and allows for more instant feedback regarding choices.
Visibility: This interface prioritizes important things, including showing a list of people included in the order as well as constraints imposed upon restaurant selection. Showing the constraints allows the user to know whether or not a certain restaurant will be “allowed”. In addition, familiar “vote up/vote down” buttons will perform the obvious action of showing the other users a list of preferences in the right pane.
Errors: Users will have the option to delete items that they don't want from their order, as well as the option to back out entirely. Essentially, one can undo any action up until the time that the order is submitted. If this design goes without a chat box entirely, the users may run into a communication issue if the interface doesn't take into account every desired communication. For example, Janet could have ordered half the duck, but Tim could have clicked the “other half” button first, leaving Todd still wanting to share the duck. In this model, without the chat box, there would be no way for Todd to communicate to Tim that he specifically wanted to share the duck with Janet (ie optimizing food order could be tricky).