There is clearly no increase in their frequency, even as the total number of reported tornadoes has more than doubled with radar detection.

FORBES: The Great Tornadoes Of 2011 Put In Perspective

Why should Aunt Sadie try to compete with High Frequency Traders who are somewhere between 50% and 62% of total market activity.

FORBES: The Battered Investment Class Has No Confidence in Markets, Companies, Banks, Governments