For what it's worth, because nobody ever answered poster #2, the AUP says:

"Customer is prohibited from engaging in any other activity, whether legal or not, that AT&T determines in its sole discretion, to be harmful to its subscribers, operations, network(s). This includes any behavior deemed unacceptable by other ISPs, behavior which is in violation of generally acceptable practices or which causes AT&T or the AT&T IP Services to be viewed unfavorably by others."