I've done that numerous times on my elists, lol
The advantage to forums & yahoo groups is you DO have the time to calm down before you post a reply so you can hopefully come across as something other than an angry ogre!
I've been that angry ogre before. I had yet to learn the art of not responding at the moment I received the email, lol.
There are as many ways to do polyamory as there are people practicing it!