"What I don't understand are the farewell responses - then the poster keeps coming back and back and back some more? "

Grace, you of ALL people should know what "grace" means. Some people just don't have any.
"The exercise of love, kindness, mercy, favor; disposition to benefit or serve another; favor bestowed or privilege conferred. "

My niece's name is Grace and I hope she grows into her name.
Claudia