What is incrementality testing? “I’ve been doing more interviews with journalists lately and realize I need a better answer to this question,” says Haus Head of Strategy Olivia Kory.

Jared Belsky, CEO and co-founder of indie digital agency Acadia, needs your help. He’d like someone to please explain to him why media arbitrage isn’t a form of stealing.

Personalization and customization are great, but when marketers go overboard with targeting, they don’t cast a wide enough net to attract new customers and foster growth, says JP Jansen, SVP of marketing and CMO for North America at Mars Pet Nutrition.

Digital Content Next CEO Jason Kint shares insights from inside the courtroom during closing arguments in US v. Google, ad tech antitrust edition. Plus: Kint noodles on potential remedies in the search antitrust case against Google.

When social media platform Nextdoor launched advertising in 2017, CEO Nirav Tolia declared it would be a $1 billion business by 2020. That didn’t happen. Nextdoor generated $66 million overall in Q3 of this year, and Tolia chides himself for his hyperbole. But Nextdoor has an ambitious plan for advertising growth.

Former Dentsu CEO Wendy Clark, current president of consulting group Consello, sees the renewed controversy around principal-based buying as a symptom of a more fundamental issue: the lack of open dialogue between brands and their agencies.

If the DOJ wins its ad tech antitrust case against Google, it shouldn’t force a breakup, says Arete Research’s Richard Kramer, who proposes this novel solution instead: Google should spin out its network business into a public interest corporation with no hidden fees.

Mike Ryan of Smarter Ecommerce helps advertisers get the most out of their Google Performance Max campaigns. Understanding what’s going on inside this walled garden black box product is now the most pressing concern for many retailers and ecommerce advertisers, he says.

As the former CMO of Sonos, Joy Howard’s job was to make people want to buy new electronics. Now, as the recently appointed CMO of Back Market – an online marketplace for refurbished electronics – it’s her job to convince them not to.

Having nipped at Meta’s and Google’s heels for years, Pinterest is finished with being the underdog. It’s been getting very “serious” about its investments in lower-funnel advertising products, says Pinterest CRO Bill Watkins.

Dotdash Meredith’s Lindsay Van Kirk says the cookie-based buying tools she helped develop in her early career at AppNexus placed too much value on unreliable third-party audiences. But contextual tools like DDM’s D/Cipher, which she now oversees, can build a better ad ecosystem for buyers and sellers.