My post triggered a few updates to come through which are now all complete.
To be clear I am only updating the list when I receive information from the organisation itself.
At this stage I am:
-Not removing organisation that I don't think exist any more - I might be wrong
-Generally not removing old staff members unless I have concrete evidence they have moved on
-Not removing organisations that have been recently acquired - they might still want their original listing on the list
I do fully support us either automating this list somewhat, or just suggesting people use PeeringDB instead.
Hint, now is a good time to either update your peeringDB entries or even just add your organisation for the first time.
Cheers
Dave