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Google AdWords Capitalization Tip: The Right Capitalization Can Make or Break Your Ad

February 4th, 2007 by Mike Reining Read more about Google AdWords Tips

Google AdWords Capitalization

There is a sci­ence to writ­ing ads in Google AdWords to max­i­mize your click-through-rate and ROI and using just the right amount of cap­i­tal­iza­tion plays a huge part.

Tip 1: Use Cap­i­tal­iza­tion in Google Ads

We have proven beyond a doubt that ads that are cap­i­tal­ized will almost always out­per­form ads that are not cap­i­tal­ized.  They just stand out more and are far more notice­able.  So, as a rule of thumb, def­i­nitely use cap­i­tal­iza­tion in your ads!

Tip 2: When NOT to Use Cap­i­tal­iza­tion in Google Ads

We have noticed that a lot of times cap­i­tal­iz­ing the short words such as “in, and, on, etc.” can have a HUGE neg­a­tive impact on the per­for­mance of your Google AdWords ads. 

Below is a case study that clearly demon­strates the impor­tance of know­ing what words to cap­i­tal­ize and what words to leave in lower case.  We tested two ads where every­thing was iden­ti­cal except the cap­i­tal­iza­tion of two tiny words. 

The result:  The ad that did not cap­i­tal­ize these tiny words out­per­formed the ad that did by over 80%! 

The above case clearly demon­strates that pay­ing atten­tion to the RIGHT amount of cap­i­tal­iza­tion is vital and just fol­low­ing the tip to cap­i­tal­ize every word can get you into seri­ous trouble. 

NOTE: This is a con­trolled test.  Both ads were sur­faced for the same group of key­words.  The con­ver­sion rate = sign-ups (i.e. new leads)

Con­tinue learn­ing more about Google AdWords

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About the Author

Mike Reining Prior to MindValley Media, Mike was the Head of New Ventures Strategy at eBay where he conceived of the strategies that led to the investment in Craigslist, the launch of Kijiji.com and the acquisition of Skype. Mike has an MBA from Stanford and previously worked for the Boston Consulting Group. He is also a certified Google AdWords Professional.

Check out other posts by Mike Reining

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7 Responses to “Google AdWords Capitalization Tip: The Right Capitalization Can Make or Break Your Ad”

  1. Bryan Eisenberg

    You are 100% cor­rect. The small­est things often impact click throughs and con­ver­sion. Chang­ing the case of one let­ter can mean so much at times. My only wish is that peo­ple would be as delib­er­ate as you are being at plan­ning these type of tests.

  2. Peter Gillberg - Software Marketing Secrets

    I can only but con­cur, I have found the exact same thing.

    It would have been inter­est­ing to test the title: “Quan­tum Boost In Healing”.

    Also — try the sec­ond row: “You Will See Results in 48 Hours!”. I bet that will make a difference.

    Thanks for a great blog.

  3. Steve Loszewski

    You should try test­ing your ads with Opti­mized ad serv­ing turned off. I’ve had ads with the exact same ad text that showed sig­nif­i­cantly dif­fer­ent CTR rates when I cir­cu­lated them with opti­mized ad serv­ing on.

  4. Richard Michie

    This has been com­mon prac­tice in head­line writ­ing for years. A few more web mar­keters should read up on “Old” direct mar­ket­ing tech­niques, which have already been tested. Try read­ing Ogilvy on Adver­tis­ing, you’ll learn a lot.

  5. Igor M.

    Here is my con­cern .… your ads might have had dif­fer­ent “ad posi­tions” that could have effected the out­come. One ad could have had more time at #3 and the other one at #4 … hence the difference.

    What do you think?

  6. David Wilson

    Back in Novem­ber you showed the oppo­site to this
    http://blog.mindvalleylabs.com/marketing/google-adwords-tip-the-subtle-influence-of-capitalization/

    where using all caps increased the CTR of the ad. What caused the change?

  7. Dave Davis

    We have just com­pleted a sim­i­lar test and while our CTR increase was not as large as yours, it was significant.

    It would appear that the smaller words don’t need to be seen as much. Your call to action words do.

    Great find.

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