The link above will take you to the "Threat Level" blog on the Wired News site.
Apparently at least one ISP is taking action against IRC channels they think might be used to control networks of compromised computers, commonly called "botnets".
This might be a good thing, or it might be a bad thing. The first impression I got was that actions like this are open to intentional or unintentional abuse. Reading this carefully only increased my anxieties.