a16z Podcast | Messaging is the Medium

The Smartphone as a Social Platform: The mobile device acts as a social platform by removing friction present on desktop web, granting apps immediate access to address books, photo libraries, cameras, location, and push notifications, with a home screen icon enabling instant friend discovery.

• This low-friction environment has facilitated an explosion of social messaging apps (e.g., WhatsApp) where users can easily install and switch between multiple networks.
• The primary remaining barrier to entry is the initial app installation, but once installed, multi-app usage is seamless.

Facebook's Second-Wave Strategy: After acquiring Instagram and WhatsApp (initially viewed as high prices but strategic), Facebook has shifted from buying new behaviors to building a platform that captures the next wave of user innovation.

• The "Sticker Button" Mechanism: Facebook allows any app to share content (e.g., GIFs, stickers, video edits) directly into Facebook Messenger feeds.
  • Users can view and share this content without installing the originating app.
  • An "install this app" button appears under shared content, leveraging Facebook's 600 million monthly active users for viral growth.
  • This turns Facebook Messenger into a de facto "app store" where the platform decides what content is featured.
• Direct Web Messaging: Websites can now send messages directly to users via Facebook Messenger without requiring the user to install the business's specific app.
  • Example: A user can receive a shipment notification from Gilt.com within Messenger.
  • Facebook retains the relationship and identity data, acting as the gatekeeper between the web and the mobile user.

Strategic Implications for Competitors: Facebook's approach attempts to co-opt the "next Snapchat" by making it advantageous for developers to plug into Messenger rather than building independent networks.

• The Trap for Developers: Developers gain immediate access to a massive user base but do not own those users; they remain Facebook users, potentially capping the acquirer's valuation.
• Competitive Displacement: This forces standalone apps like Snapchat to compete not just with Messenger, but with the entire app store ecosystem, as any third-party developer can now plug into Messenger to distribute content.
• App Install Economics: By solving the app install friction via Messenger, Facebook inadvertently undermines its own ad revenue model, which historically relied on developers paying to acquire new installs.

The Notification Panel as a New Runtime: Notifications are evolving from simple alerts into a distinct "runtime" environment on mobile devices, competing with native apps and the web browser.

• Atomic Content Units: Interactions are shifting toward "atomic" units of content (e.g., "You need to leave for a meeting in 5 minutes. Yes/No"), allowing complex actions (like summoning a ride via an API) without launching a full app.
• Platform Agnosticism: Both Apple and Google are building interactive notification features (action buttons, payloads) and exploring integration with wearables (Apple Watch, Android Wear) and web browsers (Chrome tabs becoming native citizens).
• Bundling and Unbundling: The industry is cycling through layers of bundling (websites -> apps -> notifications -> Messenger) and unbundling, with no settled standard for the primary interaction model on mobile.

Divergence from the Web Model: Unlike the 20-year period where the web browser was a neutral, stable platform for interaction, the mobile landscape lacks a settled standard and is characterized by rapid, fundamental changes in interaction models.

• Future Scenarios: Apple and Google may radically restructure notifications or identity (e.g., Apple Pay becoming a broader identity/login platform) at different times, creating a fragmented roadmap.
• Hypothetical Future: The mobile ecosystem could shift to a model where devices (like a theoretical "Chrome Phone") only run web apps, eliminating native code execution.
• Facebook's Aggregation Goal: Facebook aims to bypass the limitations of being a single app icon by becoming a central aggregation layer (via Messenger and notifications) to control the user flow across all device interactions.

Platform Risk and Stability: Unlike the News Feed, which is algorithmically curated and protected from annoyance, Messenger content is non-filtered and user-to-user.

• Facebook is less likely to intervene in Messenger content (e.g., GIF sharing) compared to the News Feed, as the platform is not responsible for the curation logic.
• However, the fundamental nature of future innovations (e.g., live video like Meerkat or disappearing messages) may require interaction models that cannot be effectively replicated within the current Messenger framework.

Identity and Payment: Apple's potential expansion of Apple Pay from point-of-sale to a broader in-app and web identity platform could fundamentally alter how identity and notifications interact, contrasting with Facebook's dominance in social identity and Google's struggle with Google+ identity.