tahsin, the point is the QLSG management, as well as other QLers has to get to know you better, through your posts and your opinions/points of view expressions, before inviting you to someone's house.
QLSG management doesn't want to create inbalance in the group. If someone is constantly creating the problems in QL, or being impolite, or expressed some extremal opinions, QLSG managers' concern is whether or not this person can fit the group.