Share With Intents

"One of the most inherently useful Android intents is the Share intent. You can let the user share data to any service they want, without writing the sharing code yourself, simply by creating a share intent."

+Alexander Lucas talks about how to app sharing to your app using the apps already installed on your phone; and how the ShareActionProvider in Android 4.0 makes it even easier.

What's other Intents do you use to add 3rd party functionality to your apps?
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