I believe Z is working on removing invalid or inactive accounts. In theory its good to remove the ones that aren't really here or part of the board, but it takes time because in some cases there are reasons why someone hasn't posted in a few months (no internet access for whatever reason or taking a small break etc) and sometimes they just don't remember their passwords or have left, who knows? Some have family issues and only lurk or post once in a while, but enjoy coming here or getting info on games etc. I imagine no log on for a year or more might be a good criteria, but again, there will always be exceptions!
