A death cross is a predictive technical indicator. Specifically, it is when the 50 day moving average drops below the 200 day moving average.
It is a clear indicator that none of the support levels in the past 9 months are sustainable and we are headed for deep decline in that product. In this case, commodities.
As for good vs bad ... depends on your position within that product.
gee, Harry Dent (”The Great Depression Ahead”) predicted bursting commodities bubble by late 2010/early 2011
Also bursting real estate bubble part deux
And Dow of 3800?
Thankfully I read this last summer and took preemptive action this month when the stock market started to tank
Looks like it’s time for a re-read
http://www.amazon.com/Great-Depression-Ahead-Following-Greatest/dp/1416588981
clips of his lecture on this book aree on youtube