Quote: This is it -- people just need to learn how to take care of themselves when they are doing their surfing.
I have another solution that I also want to write up a how-to on for XPT -- this would let people carry a disposable virtual environment around on a USB stick, and they can co-opt an existing workstation's resources temporarily and surf in absolute safety (barring a hardware keylogger, or sniffer / proxy logs at work). This has many more uses than just porn, and I think working in this way would help people avoid cleaning work or other unsafe machines.
You talking about Sandboxie? If not I was going to mention it - same concept. Ideal for adult browsing or just anyone with privacy issues. For those that don't know, it sets up a virtual environment isolated from the operating system, and all the cookies, downloads, history, activity are sequestered in this isolated environment. If the sandbox detects malware or viruses, or if you want to 'reset' the virtual environment for any other reason, it only takes seconds to start fresh. Much better than having a regular browser stashing historical data and files all over your harddrive.