Why Is SPAM A Problme?

The following information has been compiled thanks to the help of The Australian Communications and Media Authority (ACMA).

Spammers flood the Internet with billions of unwanted email messages. This spam causes significant inconvenience to both individuals and businesses: it disrupts email delivery, clogs up computer systems, reduces productivity, wastes time, irritates users and raises the cost of Internet access fees. Many spam messages also contain material that is offensive or fraudulent, and spam is sometimes used to spread computer viruses.

Other articles that may help:

What Is Spam?
Why Is Spam A Problem?
Australia's Anti-Spam Law
How can I avoid sending spam?
Spam Exemptions
Government/Industry spam actions
Security tips for your server