I have to disagree with that advice. If someone wishes to make logs of their conversations the "risk" involved in those strings are tiny in proportion to the usefulness of keeping logs. I've been logging for 7 years and encountered such a problem ONCE when I deliberately investigated the issue.
Besides, the only strings I've ever seen put in topics are benign lines purely designed to "trick" antiviruses (usually Norton Antivirus) into thinking there's a virus on your computer when there actually isn't ("false positive").
Regards,
