I'm not sure deleting the post will make it go away. Won't it still show up with "Post deleted by.." in the subject header, with the same effect of pushing other threads down?

Since you asked, Dr Bill, I prefer the conversations here to the word lists -- they make my eyes cross. But if you continue to refrain from swamping the more popular fora then I see absolutely no problem with it: there are some folks who enjoy reading them as much as you enjoy posting them and that's certainly in the spirit of a word-themed message board.

Meanwhile, I agree that it is not courteous to make a private correspondence public without the consent of both parties. But you already knew that.