Myself, I use that option (to exclude myself). Without knowing how all participants options are set, we are guessing. You might ask the 'interested' party if they exclude themselves in their setup options.

>Don't know, Jim. But it seems to happen regularly. Twice today I've responded to someon'e answer to someone else; in both cases I thought the 3rd party would be interested in the reply and in both cases he was not on the cc list.
>
>Try it yourself - you don't even have to save the reply - just look at the cc list.
>
>
>I may be wrong but ...
>
>>Terry,
>>
>>Could it be that person has exercised his/her right to be excluded from the CC list?
>>
>>>I've often noticed, when responding in a indented thread, that the CC list often doesn't include all people on the same branch (who have a vested interest in the branch). I think it's usually the person 2 nodes up, i.e. the person to whom the person to whom you're replying replied.