I have now added a re-evaluation function to
http://www.fennerty.com , to address your concern. If you find a domain that no longer is available, simply click the little green "R" next to it and then Fennerty.com will re-evaluate its availability, and, if warranted, remove it from the list. Of course, I don't expect you to run around and police the lists, the idea is that when falsely reported domains occur, or someone register a domain from the list, then they will be removed before too many people can be annoyed by them.
Thanks for your feedback, and I hope the action is satisfactory.