Johnny B Good wrote:

My news client, as the subsequent 8 follow ups before, all correctly
repeated the subject line which was already possessed of a " " prefix
(but now sans the "OT: " prefix which Martin's follow up had stripped out
of the OP Subject line).

*NEXT!*

Not quite so fast ...

Subject lines aren't the mechanism proper for grouping messages into
threads in a decent client, and yours seems to have stripped the
references header in two of your replies yesterday (to Adrian Brentnall
@ 19:02 and Martin Brown at 13:59) hence creating two new threads as
far as most here are concerned.