Would it be possible to add an option to mark all feedback as reviewed? On the screen that lists all of the feedbacks, there is a bulk option to move all feedback to the trash. You could add an option to that menu to mark all as reviewed, similar to how you can "mark all as read" in an email program. The problem is that it's time-consuming to have to open each feedback and hit the "Reviewed" button for each one.
Even better would be a button to mark all as reviewed, as opposed to having to select it from the bulk options drop down and then clicking Apply.
Thanks and keep up the good work!