The thing is there will be something for noobies to always learn. So your argument is flawed.That is not true. Noobies won't stick around if there is nothing to learn, specially if they are not even in the same ballpark. Also if the pros keep using pro language (optionguys I am thinking about) a newbie loses interest very fast.
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Another idea: One can use ET's private threads for chatting among multiple people. You only give permission to those, whom you want to invite....
Edit: I remember now, I used this site:
https://www.chatzy.com