California's new privacy law has accomplished what previously seemed unthinkable: It spurred tech companies and the ad industry to call for federal privacy legislation.

The NAD drew a distinction between material published with the motive of attracting readers and selling products: if a publisher's main economic motivation is to draw readers, the content is not advertising; if the primary purpose is to hawk merchandise, the content might be considered advertising.

Facebook recently instituted a fact-checking system aimed at preventing the spread of misinformation on the service. But the company's treatment of a recent Think Progress piece suggests the initiative is half-baked, at best.

Attorney General Jeff Sessions plans to meet this month with state attorneys general to discuss whether tech companies are "intentionally stifling the free exchange of ideas on their platforms."