I am who did create and manage Vietnam group for long time, create tutorial, connect new Vietnamese ppl to Drupal community, my group has about 500 members for now. You can check it at http://groups.drupal.org/drupal-vietnam
We also have some other group admins. Now, I don't know why all of our admin membership removed, without any notification, discussion, admin membership is granted to Tom Tran.
It's not big number, but it's our time, me and my friends. Tom Tran, who's he, why he can be admin, how can all of my staff kicked without reason?