Anna, your post at epi was not impolite. I was part of that discussion >>
and though I disagreed with you I hope my post didn't sound preachy. (Some of the ensuing posts seemed deliberately snide).
It's so easy to misinterpret the tone of something without facial expression, tone of voice, etc. I don't like to use smiley faces myself, and even these can be interpreted sarcastically.
Mimi has set the tone here for a positive environment where folks can give each other the benefit of the doubt. No so at epi.