App Activities are now visible to all the friends of a user, regardless if they have the App installed. This means that App Activities are another channel by which your App can virally grow.
If you are already publishing App Activities, you technically do not need to make any changes, however we encourage you to think about how to best leverage App Activities as a user acquisition channel.
To ensure a quality user experience, we provide users the ability to block unwanted App Activities and other communications. If the user has the App installed, they will have the option to turn off receiving App Activities for the App or uninstalling the App. If the user does not have the App installed, they have the option to block all communications from the App.
As always, the user experience is of utmost concern to us. We'll be closely monitoring the use of this feature. Any developers that are found to be abusing this functionality to the detriment of the user or in violation of the Terms of Usage will be dealt with immediately.
The team has put in a lot of hard work into this feature and the required infrastructure to support it. We look forward to seeing the results of developers taking advantage of this new viral growth channel. Please send us your feedback and success stories.