someone on Fox News is spinning it as a good thing, so I say good luck with that:

Stocks tumbled Tuesday as the bond market gave signals that in the past have preceded economic slowdowns. The Dow Jones industrial average lost more than 100 points.
The yield curve, the spread between the yields of short-term and long-term bonds, inverted for the first time in five years. That means short-term interest rates were higher than long-term interest rates. Investors have been watching the yield curve closely because, in the past, inverted yield curves have preceded recessions.