Wouldn't it make great sense to communicate the proposed "rules of engagement" to newcomers, say in an e-mail from our Fearless Leader?

What do you mean by "Fearless Leader"? We've been left by Anu to graze freely in this lovely field of philisophical etymology. Anu himself has made possibly two posts other than the weekly themes, both of which were very early on. I would say that if anyone were to alert new users of the "Constitution" it would have to be Jackie because she already greets everyone.