We've updated the documentation for Callback URL Settings. This update details improved functionality by adding a sourceUrl parameter which enables you to track the location of successful additions/removals of your applications. For example, you can now link to where an application is added (e.g. Canvas or App Profile) and include custom ...

We recently introduced the ability for users to restrict applications from accessing either their public or private photos as you've probably noticed from the new install options (or if you're app can't get a user's photos anymore): What if your app must have photos to be useful? You can use the opensocial.requestPermission() ...