Actually, it wouldn't hurt the bottom line at all. The bandwidth consumed by the average botted PC is far higher than a regular user. Thus, they cost ISPs more.
As was explained above, the attack may not be coming from AT&T's network - it may be coming from anywhere, but spoofing the packets so they look like they come from AT&T.
From the article:
"The trouble with exploring the solar system is that there just aren't any rocket fueling stations out there. That won't be the case if future planet-hopping astronauts are equipped with a new kind of rocket engine which burns two gases that are already in good supply on several other planets: methane and oxygen.""
Jessamyn is a free speech nerd. Her father is Tom West of Data General fame.