Sean... Bigger and more important questions than "How do you make sure your users only access safe content?" are: 1. Should you? It is very hard for me to distinguish this from censorship in my mind. No, I'm not saying malware doesn't violate community standards of decency. However, so do obscene phone calls. TPC is not expected to block all obscene phone calls. They are expected to assist in the investigation and termination of repeated abuse. I think ISPs should be held to that same standard. Anything more treads a slippery slope. 2. Who defines "safe" content? Is porn safe? Is <freeapp> (with it's well known spyware and other adjuncts) safe? Is <peertopeer> safe, with it's well known tendency to support copyright infringement? Is the web safe, given the various malware activex components, javascript bugs in browsers, etc.? I like deciding for my self what risks I will take. I really don't want my ISP making those choices for me. Owen