Just for clarification, when I had earlier said something about notifying contributors by sending a simple message upfront, this was not meant to necessarily be via a specific e-mail notice, but rather simply posting general directions for ALL users upfront at the outset, when people first sign up!
We are not really anonymous, or at least not totally in my opinion. With the emails provided to "Randy & Co" when we sign up, things can be easily matched. Yet, not so simply by each independent user. Regarding the additional mailboxes, you can easily run into the unfortunate problem of having too many - as I sadly already have!
Also, there is always the option of having certain specific areas/sections "restricted" either by access or to posting unless an email address is displayed!