The PM in question was someone who joined and put the words "Forum administrator" in their signature. They sent a message stating your computer is infected/has a virus/is being used to send spam emails. You are then instructed to click on their link, are taken to their homepage disguised as a virus scanner, and prompted to download a 'virus scanning program' which we have identified as a malicious website delivering a virus or other program to hijack the end users PC. This is not an issue for Macs, darn you.