MDL 3047 is a multidistrict litigation consolidating hundreds of lawsuits against social media companies including Meta, TikTok, Snap, and Google. The lawsuits allege these companies designed their platforms to be addictive to children and teenagers, causing mental health harm including depression, anxiety, and eating disorders.

Which companies are defendants in MDL 3047?

The primary defendants include Meta (Facebook, Instagram), TikTok (ByteDance), Snap Inc. (Snapchat), and Google (YouTube). These companies are accused of using manipulative design patterns like infinite scroll, autoplay, and algorithmic recommendations to maximize engagement regardless of harm to young users.

What are addictive design patterns in social media?

Addictive design patterns include features like infinite scroll (endless content feeds), variable reward schedules (unpredictable likes/notifications), social validation loops, autoplay videos, and algorithmic recommendations optimized for engagement over wellbeing. These patterns exploit psychological vulnerabilities, particularly in developing adolescent brains.

Why Section 230 Isn't a Get-Out-of-Jail-Free Card

For years, social media companies have invoked Section 230 of the Communications Decency Act as an impenetrable shield against liability. "We're just a platform," the argument goes. "We can't be held responsible for what users post."

But Judge Yvonne Gonzalez Rogers' November 2023 ruling in MDL 3047 demonstrates why this defense has limits.

The Content vs. Design Distinction

Section 230 states that platforms cannot be treated as "publishers" of third-party content. If someone posts something defamatory on Facebook, Facebook generally isn't liable for that defamation.

But the plaintiffs in MDL 3047 aren't suing over content. They're suing over the design of the product itself:

Infinite scroll that removes stopping cues
Algorithmic amplification that promotes harmful content
Variable reward mechanisms that create compulsive use
Notification systems designed to maximize re-engagement

As Judge Rogers wrote: "Plaintiffs here do not seek to hold Defendants liable for what others said on their platforms. They seek to hold Defendants liable for their own conduct—the design of product features that allegedly cause harm independent of any content."

The Product Liability Parallel

Consider an analogy: A car manufacturer cannot be held liable for where someone drives their car. But they absolutely can be held liable if the brakes are defective.

Similarly, social media companies may not be liable for the content users create. But they may be liable for designing features that are unreasonably dangerous—especially when internal documents show they knew about the dangers.

What This Means

The Section 230 ruling doesn't mean plaintiffs will win on the merits. They still need to prove:

The features constitute "defects"
The defects caused harm
Defendants knew about the risk

But it means the case proceeds. And that changes everything.