@receiver(user_registered)
@receiver(local_site_user_added)
def _add_default_groups(sender, user, local_site=None, **kwargs):
    if local_site:
        default_groups = local_site.groups.filter(is_default_group=True)
    else:
        default_groups = Group.objects.filter(is_default_group=True,
                                              local_site=None)

    for default_group in default_groups:
        default_group.users.add(user)
To Come in da future. For now, no use
dataset/ETHPy150Open reviewboard/reviewboard/reviewboard/accounts/models.py/_add_default_groups--crossover with--dataset/ETHPy150Open Diastro/Zeek/src/server.py/Server.mainRoutine