The overall rating reflects the current state of the app. It accounts for all app reviews but prioritizes the most recent ones.
It's attractive enough and functional. Only issue is that when liking a window opens with "Say something about [facebook page]", but it's inside the Social Offers box. It took a minute for me to get it to stay liked and be free of the box to see the code. As it is users may get frustrated and rage-quit the whole purchase.
If it were fixed to prevent the box from appearing or have the box appear on top so that it cold be closed, it would be a 5/5.