@slaycock
As your (unfriendly) remark might be understandable in some cases (and perhaps even correct in this case), I would suggest you take some time to investigate the person you are offensive with in the future

Jeff has been a great help on this forum ( I know it mostly from Excel and other forums), providing good answers and also getting more than his share of OP's not giving any feedback, not thanking him, etc.. (I know the feeling too after more than 10k posts on various forums...)
AFAIK, he never made any remarks in the sense you did although I can easily imagine he has been frustrated many times.
I do not know how well you are acquainted with free forums, but in this case you seem to be heavily overreacting and possibly hurting someone who is a great help.
May I suggest, in the future, that you PM the member to understand why he gave no feedback?
Cheers

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