I'm not posting this to suggest what's going to happen or what to do. I just find this kind of thing interesting is all. This is the ^VIX index, the volatility in the S&P 500, against the S&P 500 overall market. There's a clear correlation between a sharp spike in the VIX and a drop in the market. Again, this is just for entertainment purposes, your guess is as good as mine if it means anything.
http://finance.yahoo.com/echarts?s=%...tacking":true}