From the Stray Thought Bin- Urban Legends

How easy would it be to start an urban legend? As easy as thinking of something absurd and outrageous, then telling someone else by word of mouth or telephone or by typing it into an email or a web page or a blog or by texting it or twittering—and then pressing a key or clicking a computer mouse. These are not sufficient but they do seem necessary factors. Which absurdities and lies gain traction involve other considerations. The potential for passing off nonsense to others seems frighteningly easy, however. Which perhaps shows the merit of the ancient Talmudic advice:

Silence makes a fence for wisdom.