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Unlike the iPhone, Android users are free to download apps from sources other than Google’s official Android Market. With Google not yet offering paid-for apps in the Android Market in all territories and some manufacturers not including access to the Market at all, alternative stores can be an attractive way for developers to reach a wider potential audience. However, are they worth trying from a user’s perspective?
6 Alternatives to the Android Market - The Next Web
Creates an event on behalf of the user if the application has an active session key for that user; otherwise it creates an event on behalf of the application. Applications can create events for a user if the user grants the application the create_event extended permission .
events.create - Facebook developers
Integrating Events into Your Applications - Facebook developers
We’ve just released some changes to the API that allow your applications to integrate with Facebook's Events application.