I just tried to reply to a post I placed on the scvcrfg group. I was the only recipient of the reply. Duh!
It was once possible to have a threaded discussion in Yahoo Groups. Now it seems that the only option is to open a new thread every time you want to comment on something.
If there's an option to 'reply to group' it is very well hidden.
have you contacted the moderators about it? email@example.com