This is an opt-in beta for a simple Video Questions Editor on YouTube. Through this editor you can setup multiple questions to be displayed on top of your video during playback that a viewer can answer.
How can I use this feature?
The editor itself can be found on the video edit page, on the edit bar. After you have added several questions and the users have viewed them, you can see a summary of the interaction your users had with them through the analytics page, within the Annotations section.