Comment Good. (Score 4, Insightful) 379
This is something that I've tried and tried and tried to explain to some of my friends that work in marketing. When you are sending spam, you are literally using somebody *else's* property in a way that they don't want you to use it in order to give them messages.
This should be looked at no differently than causing unused speakers in my house to play radio advertisements when I want them turned off.
You send spam, and it's taking up a limited resource (disk, bandwidth, power, man hours, etc.) to your end and against the will of the recipient. I really hope that there are more cases like this.