@cicerone imposter,
We ended January 2014 with the worst performance in the stock market since 2012. I'm afraid we're going to see more selling come Monday forward that will drop the DOW, Nasdaq, and S&P even lower. I think corrections are good for the health of the stock market; it keeps people on their toes, and many learn the simple lesson that none can time the market no matter what tools they have at their beck and call.
If you ever listened to the financial pundits, they try to analyze each days ups and downs, but that's total bull shyt! There are too many variables that impacts the market that cannot be summarized on any day. Much of the buy and sell actions occur based on subjective guesses and emotion.
The best strategy is to have a mix of mutual funds that have performed well for the long-term. When investing, buy at regular intervals to average cost what you buy. When you sell, do the same; do it over a period of time rather than one or two sell orders. That way, you don't sell at the bottom or at the top; average.