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How will users interact with your application Facebook applications were once all about having a great profile presence and sending invitations Now, they focus on creating Feed stories, and profile boxes are not as important Make sure that your application is designed from the start to use the integration points to your advantage Use Feed forms to create short stories from inside your application and the Publisher to let users interact from their
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Home page or profileApplications can also integrate with Facebook Chat for real-time communication You also need to plan the workflows for how users will engage with the applicationTry to refine long sequences of actions some users will give up at each stepAlso, plan to build in A/B testing and metrics for a solid understanding of what is working and what isn t
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How will your application respond to feedback Most applications do best when they create something good enough quickly and then release updates as they gather usage data It s a good idea to have a set of plans for future releases, but recognize that responding to user feedback can result in the application taking a completely different track than what it started with Having clearly defined goals up front helps you decide when to make a set of changes and when to stay the course It is possible that the users you first acquire are not the ones you were expecting, and the feedback they give might lead you down a path that s inconsistent with your objectives
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Do you have a scalability plan As discussed in the introduction to this chapter, most applications are not successful, so chances are likely that you won t need to allocate dozens of servers at the start However, doing some planning can prevent you from repeating the experience of the iLike application s founders after their user count dramatically increased driving around in a truck trying to find more servers for the data center 16, Improving Application Performance and Workflow, goes over some scalability tips, but you need to design the system up front to use multiple serversThink about how you can use Facebook s own servers to help take on some of the burdenAlso, choose a host that supports autoscaling and pricing based on actual usage, rather than paying by the month
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Facebook has laid out a set of Guiding Principles to help developers understand how to make successful applications Most of these seem like common sense, but you can easily find applications that don t follow any of these guidelines and suffer the consequences of low user count, bad reviews, and short lifetimes Not every application has to offer all these things, but the better an application is at incorporating them, the better its chances are of getting and keeping users
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As previously discussed, applications need to provide users with some valueThat value must be apparent to get users to authorize it, and they must continue to see value to keep it on their profile, allow it into their stream, invite their friends, or simply keep using it
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2 Making Great Applications
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The following sections discuss the types of value recommended by Facebook s Guiding Principles Enable Social Activities The most powerful feature of Facebook is the social graph Harnessing the information from a user s friends allows applications to help them connect in new ways or more easily, or just learn more about each other Some good examples of applications that use Social Activities are iLike, which helps music Fans create and share playlists, and Movies, which uses quizzes to identify similar movie tastes with friends Be Useful Applications must strive to do more than allow users to throw sheep at each otherThey need to help users easily organize things on a scale that just isn t possible outside of FacebookApplications like We re Related enable users to quickly build their family trees, whereas users of Cities I ve Visited can mark their travels and create reviews to share with everyone Allow Users to Express Themselves Users can fill out their profile info, update their statuses, and upload photos and videos using Facebook s built-in applications However, many more possibilities exist to allow users to share more about themselves and create content Sports applications, like Boston Red Sox Fans, allow users to show off their sports affiliations by starting Waves (Lil) Green Patch lets users demonstrate their support for the environment by building a Green Patch with their friends Engage Users Attention Applications need to be interesting enough that users will want to use them more than once, even for short periods of time Social games, like Texas HoldEm and Scrabble, enable users to play against each other SuperPoke, with its large variety of pokes, has people constantly sending things back and forth
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