I have been tracking DXY as an inverse proxy for the overall US stock market (When dollar low, stocks can grow; Dollar High? Stocks will die. -Citation unknown)

Benioff of Sales force, Microsoft this morning, have reduced forecasts or expressed reservation on the rocketing dollar.

I think it will continue to go up, like the milkshake theory says, and its helpful as a general proxy, but I would like to hear some other ways to use the DXY chart and why company heads are stressing over it.