Interfaces for the Crowd

• Crowdsourcing applications– Automatically ividing up a big task into smaller

ones and having lots of people do those tasks to complete the large one

• Large group coordination– Flashmobs, etc.– Examples from MMOGs

[Social] Network Effects• How does the value of an application change as

function of the number of its users changes– Being the only person using email would be pretty

pointless

• Implications for designing applications/interfaces– Indication of size of current (synchronous/ asynchronous)

user base can help user expectations– Designs that include

ways to help bring inmore users or migrateusers from competingapplications

Crowdsourcing

• Dividing up tasks– Top-down design– Reduce ambiguity and need for interpretation– Engaging tasks make for better results

• Do the users care?• Can it become entertaining?

• Include methods for validating results – Get same result from more than one person– Voting schemes– User ratings based on their results