Is there a list of members who have changed their screen name or is this somehow secret? These name changers are making it difficult for me to keep track of my grudges. 
I don’t believe there is, but that would make an interesting feature to include on the Profile page. Too bad they hate hacking the board software, it would be really easy to implement.
No there is no list. We usually ask posters who change names to put their old name in their signature for a while so that people can make the connection between old and new name.
Thanks Arnold W. I’ve noticed many high postcounts for user names I don’t recognize, and can only assume that at least some of these have changed names. I think I’m a regular enough board reader that I’d have noticed them before, but evidently not regular enough to have noticed the change, or recognize the posters.
Even better. I can visualize the necessary code to automatically display a name change in a sig for any arbitrarily-chosen length of time. You know you’re a geek when dreaming this stuff up is the high point of your day.
It’s not a complete list, but here’s a thread asking people to identify their former usernames.
I also sometimes search the user’s old posts to see if I can see someone else referring to them by their old name or ask someone what their old name was.