
Technology and Standards ◾ 281
data, friend lists and other information with each other and with third-party developers.
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Without an agreed, common API, all the dierent SNSs would provide their own unique
set of interfaces, causing a headache for developers and slowing new developments. With
OpenSocial however, each service develops its own implementation of the agreed common
standard interface, and developers need only use the interface calls from the common API
in order for their new applications to work with any site that oers OpenSocial. It makes
use of a number of key standards and technologies including HTML, JavaScript, XML ...