This is more of a rant to express my frustration. Facebook has now removed their "reviews" tab, claiming that it was not the most effective tool. Personally I felt it was good and very rewarding to see someone rate our show and post a review.
The feature was there, perhaps it was something that had to be activated by the administrator. Yes, you can comment on the wall, but the great disadvantage is that in due process that comment gets bumped down the wall and eventually not seen.
I felt the reviews tab provided value because the comments were static and was accompanied with a starred rating system.