As promised by the Developer. Facebook Viewer has been updated to V1.2 and finally inherits the BACK button.
What more do you want from a Developer that responds quickly.. Like I said @Camb078 the Developer really reminds me of the Developer from Symbian who Developed the most succesfull Social Media App called Gravity.
Hope to see more bug fixing and added features in future updates..
So far.. I've only noticed the BACK button.
The Delete button is still there in the way of your reading.. Hoping this gets fixed next and more features to come on the Live Tiles and Toast Notification.
So go on ahead to the Marketplace and update your Facebook Viewer.