A very listenable and informative overview of the Spam Wars from 1998 to 2005. Now that major ISPs have decent filtering in place, spam isn’t as much of an end-user problem as it used to be (unless of course your email address has been blacklisted as a spam source).
The presentation is listed as the February 2, 2005 Wednesday Webcast entitled “Spam Prevention: Past, Present and Future” on the SANS webcast archive page at
https://www.sans.org/webcasts/archive.php
See the Howto for information on how to access a SANS webcast.