Changing the subject

[Chan Chung Hang Christopher]

Dotan Cohen wrote:
>> While taking that approach may be valid, I think those times should be
>> rare.  Generally I agree with you that if it is important enough to
>> change the "Subject:" line, then it should be a new thread
>>
> 
> But CC the original thread posters as some users are subscribed to too
> many mailing lists to watch all threads, but rather only watch the
> threads he is participating in. If you don't CC me then I won't see
> the new thread.
> 

Which is exactly why the subject change should be done in a reply to the 
thread and not just start a new thread...