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Google AdWords: A Significant Change to the Algorithm

by Don GoldbergMarch 29, 2017
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Google has done it again, quietly making a significant change to the way its algorithms process Google AdWords that could be significant challenge for digital marketing if not understood and managed.  At Bluetext, we closely monitor all of updates to how the Google’s search engines returns query results, and we have posted a number of blogs to let our clients know about these changes and how to address them.

This time, it’s a little different because this change, which Google announced on March 17, addresses AdWords, the tool companies use to implement their keyword purchasing strategies, rather than a revision of its organic search functionality. With this change, marketers may need to adjust their spending programs for purchasing the keywords that drive traffic to their sites.

In the past with AdWords, marketers would select a set of short-tail search terms that would be part of their search advertising mix. For example, a hotel chain might include simple key phrases like “best hotels in Nashville,” mirroring the way customers search for a list of places to stay. Up until the latest change, that exact phrase would drive the Adwords results. But Google has decided that people don’t always type their searches as that exact phrase, dropping the “in” by mistake or even misspelling it as “on.” As a result, Google has decided to expand its close variant matching capabilities to include additional rewording and reordering for exact match keywords.

What does that mean? In layman’s terms, Google will now view what it calls “function words” – that is, prepositions (in, to), conjunctions (for, but), articles (a, the) and similar “connectors” as terms that do not actually impact the “intent” behind the query. Instead, it will ignore these function words in Adwords exact match campaigns so that that the intent of the query will be more important that the precise use of these words.

Sounds like a good move, because if you search for “best hotels in Nashville” or “Nashville best hotels,” the result will be the same in AdWords.

But what if the search is for “flights to Nashville,” which isn’t the same as “flights from Nashville”? Ignoring the function words “to” or “from” would change the purpose of the query. Google says not to worry, its algorithm will recognize the difference and not ignore those words since they do impact the intent.

Hopefully, Google will make good on that promise. But advertisers who have been briefed on this revision aren’t too certain. Their carefully constructed AdWords investments might take a hit if the function words are not managed precisely to meet this new approach.

We like the old adage of “Trust but verify.” While we take Google at its word, we know there are always growing pains with these types of revisions. For our clients, we are recommending that they carefully review the terms they are including in their AdWords mix. Our advice: Be as precise as you can and factor in how these functions words might be perceived before pulling the trigger. Losing traffic to your site because of placement of a simple word should be a real concern.

Want to think more about your adWords, search and SEO strategies. Bluetext can help.

Frequently Asked Questions (FAQ)

What exactly did Google change about AdWords 'exact match'?

Google expanded close-variant matching for exact match keywords to include certain rewording and reordering. Function words — like prepositions, conjunctions, and articles — may be treated as interchangeable when they don’t alter intent. In practice, queries such as best hotels in Nashville” and “Nashville best hotels” can now match the same keyword. This shifts control from strict syntax to inferred meaning

Why does ignoring some 'function words' matter to advertisers?

Because those small words sometimes carry big intent signals. When truly interchangeable, ignoring them helps capture natural query variation without bloating keyword lists. But when words like to” and “from” change the meaning-think flights-they must be respected to avoid irrelevant clicks. Advertisers need safeguards so budgets follow intent

How can I protect campaigns where prepositions change the meaning?

Segment ad groups for directionally sensitive queries and monitor search term reports closely. Use negatives to exclude opposite-intent phrases, and pin ad copy and landing pages tightly to the intended direction. Consider phrase or exact variants alongside smart bidding to control match quality. Regular audits prevent costly drift as the algorithm interprets intent.

What's your practical 'trust but verify' workflow after this update?

First, document hypotheses on which function words can be ignored without harm in your vertical. Next, QA with controlled experiments and label impacted campaigns for side-by-side comparison. Track CTR, CVR, and CPA deltas by match type and query pattern. Roll out learnings gradually, keeping an eye on unintended spend leakage.

Should I change my keyword build now that close variants are broader?

You can simplify lists where harmless reordering or minor word changes don’t affect intent. However, keep explicit coverage for high-value, intent-critical phrases. Maintain a robust negatives library and refresh it weekly based on search term mining. Balance efficiency gains with the control you still need for profitability.

How will creative and landing pages need to adapt?

Write ads that speak to the core intent rather than a single rigid wording. Ensure landing pages satisfy both common permutations to avoid quality score hits. Where direction matters, mirror that specificity in headlines and calls-to-action. Alignment between query, ad, and page remains the strongest defense against waste.