Spam is basically unsolicited emails you receive. Usually these take the form of advertisements for goods and services.
iGlide takes spam VERY seriously. We use cutting-edge server-side engines to make the probability of you ever even seeing spam low. We also do SMTP checks and compare against known spam databases to automatically block from these addresses. However, it is impossible to stem the flow of spam completely. For this reason we also employee a tool called Spam Assassin that you can use to further stop the scourge of spam from reaching your inbox. The following document will show you how to create your own system of rules to help solve this problem.
There is a much more informative guide that can be found here about what spam is and how it works.

This problem has also been taken up by the federal government. There has been legislation enacted to stop spamming. It is called the CAN SPAM Act (2003). A summary can be found by clicking here, and the full-text version found by clicking here.

iGlide also has our own set of rules governing what this means. The End User Licensing Agreement (also called a EULA, found here.) specifically forbids the sending of spam through our systems. It is well worth your while to read through this document, particularly sections marked Content Responsibility and Abuse.