This was the only point raised during the discussion of anonymous monk yesterday which made any logical sense to me. I understand how people can be confused by multiple posters, as Anonymous Monk within the same thread.

Imageboard/Textboards seem to attribute a unique identifier to anonymous postings, purely to differentiate the many voices in a conversation. This is done automatically on the server side, and does not require the poster to do anything special. I am not talking about Tripcodes, which have no place here, we have registered users :)