A possible use case for in-app feedback is to explore different reactions to A/B tested pages. It would be helpful to be able to capture both qualitative and quantitive feedback on specific aspects of the A/B test with a shared poll on both experiences.
In addition to publishing feedback polls in your ideas portal with Aha! Ideas Advanced, you can now share them within your application or email a link to anyone who voted on related ideas in your portal. Learn more.
generically speaking, can also be used to gauge satisfaction on any given feature
I like A/B testing