And that is the reason I don't send keys to Ensigns per E-Mail on this board. May suck for legitimite new members, but the keys are to valuable (for real buddies) to give away to potential fishing... people.
Although I don't understand what those referal keys could possibly be exploited for.
users of those keys can't use public game chat I believe and can only access space dock plus Azura.
Precisely for the reasons stated above, i wouldn't send out a buddy key to a low participator.