Some users are NOT interested about testing and they have subscribed to the mailing list for other kind of information.
The General Mailing List is much better to be used for Announcement, Important Updates, Support, and similar topics.
Before, Ubuntu GNOME had very few testers and no Team Leader for QA. Now, Ubuntu GNOME does have an active Team of Testers :) therefore, we need to keep the QA and Testing Communications on its area.
Ubuntu and Lubuntu both have separate team and list for QA and Testing. Not sure about others but Xubuntu have also two, one for Development and other is for general support.
So, PLEASE, those who are subscribing to the Main Mailing List:
buntu-gnome@xxxxxxxxxxxxxxxxThank you!
P.S.
Ubuntu GNOME QA Sub-Team now have 10 Active Testers and we haven't yet started the real fun. I wonder how many we will have after few months ;)