The promise of personalized ads has rumbled on for a long time. But the work involved, and even the ethics, are still playing out for many.

UM Worldwide’s chief innovation officer is one agency exec who remains bearish on the idea.

“It’s one thing to make ads personalized – but sometimes that can be a little too much, and sometimes it’s unnecessary,” says Chad Stoller, in this video interview with Beet.TV.

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