Social Media
Social media are digital platforms that allow users to create and share content, and interact with each other. They have fundamentally changed how humans communicate, get information, and present themselves to the world.
Major Platforms
| Platform | Primary Use | User Base (2024) |
|---|---|---|
| General social; groups; events | ~3 billion | |
| YouTube | Video sharing and streaming | ~2.5 billion |
| Photo/video sharing; visual content | ~2 billion | |
| Private messaging | ~2 billion | |
| TikTok | Short-form video | ~1.5 billion |
| X (formerly Twitter) | Short posts; news; public discussion | ~600 million |
| Professional networking | ~1 billion | |
| Snapchat | Ephemeral messaging; youth culture | ~700 million |
| Discussion forums on any topic | ~500 million | |
| Messaging + everything, dominant in China | ~1.3 billion |
How Social Media Works
Users create profiles — digital identities that may include their name, photo, interests, and content. They connect with others (followers, friends). They post content — text, photos, videos, links.
Algorithms curate what each user sees based on what they’ve engaged with previously — prioritizing content that keeps users on the platform. This creates filter bubbles — you see more of what you already agree with or like, which can distort your view of the world.
Social Media and Identity
Social media creates significant pressure around self-presentation. Most people share only the best versions of their lives — successes, happy moments, attractive photos. Constant exposure to curated highlights can create:
- Social comparison — feeling inadequate compared to others
- FOMO (Fear Of Missing Out) — anxiety about experiences you’re not having
- Validation-seeking — gauging self-worth by likes and comments
This is not a realistic picture of human life. People’s private lives contain far more struggle, boredom, and complexity than their social media presents.
Social Media Norms
🚩 Vary by platform and culture, but some general principles:
- Public vs. private — assume anything you post publicly can be seen by anyone, including future employers
- Think before posting — posts can go viral, be screenshot, and follow you for years
- Don’t share personal information publicly — address, phone number, daily routines
- Trolls and harassment — online disinhibition effect means people say things online they would never say in person. Don’t feed trolls; block and report.
- Arguments online are rarely productive — it’s almost impossible to change someone’s mind in a public comment thread
Misinformation and Social Media
Social media is the primary vector for the spread of misinformation (false information). False content spreads faster than corrections because it tends to be more emotionally stimulating.
Skills for navigating: How to Read the News | Evaluating Sources | Misinformation
Mental Health and Social Media
Research, particularly on young people, links heavy social media use with:
- Increased anxiety and depression
- Body image issues (especially Instagram)
- Sleep disruption (checking phone before bed)
- Attention fragmentation
Protective factors: limiting daily use, following accounts that genuinely add value, using social media intentionally rather than compulsively.
Related: Smartphones | The Internet | Misinformation | Mental Health & Happiness | Critical Thinking