Here we go again. Many publishers are grousing about big drops in traffic from Facebook. Audience development whizzes are taking to Medium, Twitter and even Facebook to sort out if this drop is a blip or something more ominous.

Snapchat's losing ground to Instagram in the hearts and minds of scale-hungry marketers -- and that could blunt the momentum of its ad business. "Many of our clients are deprioritizing Snapchat," said one agency exec. Uh-oh.

At the Digiday Brand Summit, we snooped on candid conversations of brands and found out what's really on their minds. Sample: "All the metrics mess really made us bring down our spend on Facebook. We moved it all to YouTube. Then we found out there's porn there."

Luxury luggage brand Tumi is getting serious about data and programmatic. Tumi's chief digital officer walked us through how the marketer is formulating its programmatic ad strategy.

Walmart gobbling up fashion brands could end up backfiring with the brand's core customers.

The Weather Channel is branching out beyond weather content -- and finding an audience. Neil Katz, svp of content and editor-in-chief of The Weather Channel, will explain how the company is doing it at the Digiday Video Anywhere Summit in New Orleans in May. Check out all the speakers here.

Get the 2017 report on integrating search and social programs to improve your budgeting, bidding, and targeting decisions on Google and Facebook. Sponsored by Marin Software.