At Alabama, some of the older houses have many more legacies going through rush than they can accept. "Local" legacies, especially those whose sister or mother was a member of that
particular chapter, have an advantage over those whose relatives were initiated elsewhere. Even better would be if your grandmothers (on both sides!), your mother, your aunts and your sisters were all members of that particular chapter.
Oh, and maybe your great-grandmother, too! Of course, that doesn't happen often... but locality is key. Tradition is big here. Now, not everyone whos mother was an XYZ at *smallnorthernschool* will get dropped, but you can't assume that you will get a bid just becuase you're a legacy. I think that UGA's website is just reinforcing that fact, but they are trying to state it in a nicer way.