Because it was profiled in the news yesterday.
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the S&P 500's 50-week moving average is falling below its 100-week moving average.
This "statistically significant" death cross has only happened twice in the past two decades, Laidi points out. The first took place in 2001 and was followed by a 37 percent decline in the index, while the second pattern occurred in 2008 and preceded a 48 percent drop.
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So if it only happened twice in 20 years..and the massive drops that occurred in 2001 and 2008 followed it; that gets people's attention.
http://www.fool.com/investing/gener...actors-will-drive.aspx?source=iedfolrf0000001