In the quest to create a truly epic pay per click campaign, our intrepid search marketer often runs the gamut of keywords, from the obvious to the creative to the downright silly.

But no matter how stupid “paper click” might sound as a keyword, there’s at least one person out there who’s going to search that exact phrase, right?

Right?

Oftentimes, depending on how enthusiastic the search marketer might be, an account can accumulate hundreds of keywords that never get any impressions at all, leaving one to wonder: is it really worth it, keeping all these zero impression keywords?

Maybe.

Generally speaking, it’s a good idea to cull any non-performing keywords, especially since a large number of them make it more difficult to manage your account. For the most part, they’re really not adding anything of value, since their click through rate is technically at zero percent.

On the other hand, a CTR of zero percent doesn’t necessarily lower your Quality Score, at least according to our Google sources. While CTR plays a major role in determining a keyword’s Quality Score, it’s not the only factor, not by a long shot. The historical performance of the keyword across Google’s entire system, the past performance of your display URL, the overall performance of your account—all of these go into the equation that churns out your Quality Score.

So while it’s safe to assume that most zero impression keywords are clogging up your account, it’s the Quality Score that ultimately decides whether a keyword is worth keeping or not. If the Quality Score is less than five, or otherwise significantly lower than the rest, your best course of action is to delete the keyword.

And if the Quality Score is good? It definitely doesn’t hurt to let it hang around a little while longer. A high quality keyword is better than nothing, right?

Right.

Ad Quality, Adwords, Google, Google AdWords, negative keywords, PPC, Quality Score