How I broke Siemens Energy communications, via company-wide email plea: "My cat has fleas. I tried everything. What are the suggestions?"
The subsequent reply-all replystorm stressed the company's poor ccMail server to the breaking point.
My wife asked "what is the safest sport for kids?" on a parenting forum and came back an hour later to find 12,000 pages of heated (even vitriolic) debate with no moderator in sight.