I'd forgotten about impersonation. It's fumny really, in a sense, it sort of illustrates needs for change (contary to a well known argument here where someone sometimes argues to go back to older and better ways). The limitations and implications were known from day one but folkchat overall existed quite happily. When what was getting back to me started happening, there was no question that the system was inadequate and that changes (in this case a move or moves) were needed.