This irritated me, as it makes me somewhat skeptical of the "we don't track" claim.

However, I noticed that if you use their HTML version (i.e., use duckduckgo.com/html/<query> instead), that they don't do the click-tracking. The only downside I've noticed is that there's no infinite-scrolling mode, you have to hit "next".

Whether they're still tracking the search queries, though, I have no idea...