Reported by Riccardo Mottola, Jul 23, 2012

Open the goodies page of duck duck go:
http://duckduckgo.com/goodies.html

there are several pre-baked example. Clicking on one of them should 
yield, for example:

http://duckduckgo.com/?q=100usd+in+eur

instead I get in Vespucci an empty query like
http://duckduckgo.com/?q=