As the American markets continue to plummet, it is no harm to listen to a note of warning (from Kazonomics on TradingView.com):
After the drop we have seen for the last week, a sudden upturn could happen. However, I believe the fear factor will remain high for he present, as the market gears itself up for higher interest rates in the New Year.
Stock Trader's Almanac 2015 (Almanac Investor Series)
last year predicted that the Dow Jones would collapse by 30% or 40% at some time in 2014, and most likely in October. I believe that this correction is now in process.