Actually kitty it happened to me when I first joined GN.
I had posted on a thread started by our old friend, whose name now escapes me, but he was full of "wisdom" about financial matters and we all knew about his London pension, so I am sure you will remember.
I missed a comma out , which did make nonsense of my point ,but I was very rudely taken to task by a member who asked about my educational level.
I was totally shocked and vowed to leave GN but I am so pleased I didn't.
I never saw another post by that member.