Hmm, you're right.

Then I'd suggest you to do something to make better results, because that search result ( the AD, in particular ) is not appropriate to the query. I've searched for "duck duck go", not "search engine".

Maybe you could move it on the right ...

PS: I've re-typed the term "duck duck go" right now and the ad isn't appeared. Why?

Doesn't it grab random ads(so it won't show the same one each time)?