B3haller-Comm

Brand
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Here, you can see that Geico is attempting to sell it's name, not necessarily a certain "product", or Car Insurance in this case.

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Here we can see Billy Mays in action, presenting "Oxi Clean". He is explaining how it is better than other products, but not a specific product. He is also explaining how it works better than conventional methods.

Comparative
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In this example the "products" are being compared, showing one that is better than the other.

Defensive
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In this video, Russ Feingold is defending his position, and pointing out faults in others, (though they may not be 100% true).

Persuasive
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Here is another Geico commercial, which is using, though far stretched, the embarrassment for others.