Comment 6 for bug 284141

When you access a PPA, the members of that team are the archive administrators; you are hoping that none of them are evil by screwing you over with a bad package such as grub and such. When you have an open team however, its like saying that anyone can join that team and be an archive administrator of that PPA, and upload something without anyone checking it. On open teams, like 5-a-day, who have a large number of users on their PPA, this could be disastrous if someone uploaded an evil package.