Those lists seemed to stop updating a few years ago, probably should be removed if a quick fix is out of the question.
I've seen a few pubs with those lists, but not many. My best guess is that it was a feature that was piloted, but not taken forward, for whatever reason.
'And where he supped the past lived still. And where he sipped the glass brimmed full' John Barleycorn, Carol Ann Duffy.