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Have you tried this type of personalization before? Will you try this?
Calin Sandici's profile photoLee Goldberg's profile photoVlastimil Svoboda's profile photo
Another test may be done through the {adposition} valuetrack parameter in Google AdWords. And that's a place where you can also control (influence, actually) position through bids. Just in case Google strips the cd parameter as well :).
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