said by RangerTX :

Qwest will soon learn that they will lose customers if they do anything beyond "notifying" customers of possible problem. Not only is that privacy concern, that isp is watching what users are sending but also bad pr when you trap users till they fix the computer to your standard

said by gaforces :

It's not a privacy concern to monitor for traffic that degrades the network, or for otherwise illegal and harmful acvtivity. Isolating the problems should be sop for a network admin.
Id think it would be good publicity to see an isp that takes care of its network and customers. Offering education and help in the form of tech support is a good thing.

Its rediculous to consider that they would get bad pr for having a standard that doesnt allow worm infected pcs to send spam, ddos networks, and other worse things.

Qwest is setting a good example of what ISPs should be doing to help the botnet problem.