Note: post feedback page has been removed and will no longer be available
However, there's no way to search through this data, neither is there a way to pull data on a particular question.
I believe the ability to pull up anon. feedback on specific questions would be highly useful - especially on (old) posts which have very high views.
An option to pull up this data would be by means of adding an option to the Mod menu available under every post.
Since the post feedback option is also visible to 10k users, it would make sense if the ability to pull up specific question post feedback was also available to 10k users.