What a pain.  These are fairly easy to spot since cols 86/87 contain the
year the person joined the list.  Did a quick glance on one of my moderate
lists and spotted 30 bad entries out of 2,000.  What should we do?  I can
envision writing a fairly simple exec that would spot the bad entries and
then drop the person a note explaining the problem and suggesting that they
reviews their subscriptions.