This is a hoax. Pure and simple. The people who perpetrate hope to
spread fear, uncertainty, and doubt to people unfamiliar enough with the
internet to believe that what it says is possible.
What's described in the letter is simply not possible. It is hogwash.
Please do not exacerbate the crime by continuing to spread this message.
Actions like this are liable to get you flamed left and right by people
sick and tired of stupid warnings like this. I know you had good
intentions, but please don't do anything like this again. Thanks.