eMarketer junior analyst Blake Droesch, principal analyst Andrew Lipsman and junior forecasting analyst Nazmul Islam explain how Americans’ social media behaviors are changing, whether teens are more likely to use TikTok vs. Facebook, the impact of Tumblr’s “Group Chats” and the likely popularity of Twitter’s new “Topics” feature.

Though TikTok has become a craze among some younger Americans over the past year, recent headlines over a US government investigation into the platform’s Chinese parent company ByteDance regarding national security concerns have some marketers worrying.

In this Meet the Analyst Webinar, eMarketer principal analyst Nicole Perrin discussed how much these programmatic fees cost, explores (the lack of) programmatic transparency and dives into how advertisers are approaching the infrastructure underlying more than 80% of their display spending.

Advertisers’ reasons for working with Amazon haven’t changed much this year—it’s the leading digital retailer and one of the most-visited web properties in the US. The ecommerce giant has vast amounts of data to use to target ads, and it can do so down to the very bottom of the purchase funnel. It can also measure the results in a closed loop because it’s processing the transactions.

eMarketer senior forecasting analyst Oscar Orozco explains our latest projections for Pinterest’s ad business post-IPO.

eMarketer principal analysts Nicole Perrin and Andrew Lipsman explain how Amazon looks at advertising and how brands use the platform: What’s driving Amazon advertising, what are some blind spots, and are consumers still happy with the site’s ad experience? They also discuss the significance of a quality vs. personalized ad environment, Americans’ attitudes on Twitter’s recent political ads ban and whether we’re on the precipice of a retail jobs crisis.