F. Paul Wilson has been updating his Adversary Cycle series to bring it in line with his Repairman Jack series. It seems that once a book is listed, it doesn't get updated when a new revised version comes out. On May 22, 2012, the revised version of "Nightworld" was recently released in both print and eBook. So if I had been tracking the Adversary Cycle series, I would not have been notified about these new editions as the site still has old editions listed. However, I think you'd have to deal with the fact that some people could have the old editions and when they go to track, they should also be told of the revised editions. I know this may not be a simple fix, but it's a fix that is very important or the reason for the side becomes very badly broken.