I have two forum sites that were working nicely with authorship markup for over a year. Recently the number in GWT has dwindled to nothing for both sites. At first I thought I had something incorrect in my code that inserted the rel="author" tag, but now I know I'm not the only one that is having this problem. Anyone here seeing similar results?
Some other forum owners that are seeing this: https://productforums.google.com/forum/#!msg/webmasters/ms5VaHN3clo/kTJVnz-a_QoJ