http://www.physorg.com/news105630788.html

As I see it, the conclusions of these researchers strongly support reporting spam. It is free and easy to do so by using spam reporting sites like http://www.spamcop.net Often, spamcop"s parsing scripts report spamvertised web sites to the appropriate entities.

However, I suggest using an anonymous e-mail address, perhaps one through http://www.spammotel.com or http://www.sneakemail.com to report spam. These web sites allow you to generate an unlimited number of anonymous e-mail addresses that you can throw away, and in the process, you protect your real e-mail address. Both of these sites offer free services.

What I get out of this article, though, is that reporting spam can have a big effect on the spamvertiser. Why? Most web hosting sites have acceptable use policies that expressly prohibit e-mailing spam from them, or referencing a hosted web site in spam.

In this context, filtering does no good. Filtering is little more than a band-aid on a gaping wound.