Week 1.2 Intro To Course

Social Media Overview & Taxonomy
📌 Social media platforms are diverse, ranging from social networks (Facebook, LinkedIn) and micro-blogging (Twitter) to location-based services (Foursquare) and ephemeral/anonymous networks (Snapchat, Whisper).
📸 Content generation is highly specialized; for instance, Pinterest focuses on image-based boards, while Periscope specializes in real-time live streaming.
🔗 Networks function via distinct connection models: bidirectional (Facebook "friends" require mutual consent) versus unidirectional (Twitter "follows" do not require reciprocation).

The 5 V’s of Social Media Data
📊 The scale of social media is defined by five key metrics:
* Velocity: The high speed at which data is generated (e.g., millions of posts per minute).
* Variety: The diversity of content formats, including text, images, video, and location data.
* Veracity: The challenge of confirming the legitimacy and truthfulness of information posted online.
* Volume: The sheer mass of storage required to house content (e.g., 400 hours of video uploaded to YouTube every 60 seconds).
* Value: The critical factor of whether the data generated actually holds utility or meaning.

Platform Mechanics & Building Blocks
📱 Facebook: Utilizes a graph-based structure where users, content, and relationships are treated as nodes and edges, allowing for complex interactions via likes, shares, and comments.
🐦 Twitter: Operates as a micro-blogging site limited to 140 characters, utilizing hashtags to track trends and mentions to engage specific handles.
📍 Foursquare: Centered on check-in functionality, leveraging user location data to provide reviews and tips for restaurants and venues.
🔥 Tinder: Employs a swipe-based interface (left or right) to connect users based on location and profile similarity.

Key Points & Insights
➡️ Critical Media Literacy: Users must distinguish between online perception and offline reality; social media posts often present a curated, idealized version of events that may not reflect the actual situation.
➡️ Rapid Proliferation: The growth of social media is inextricably linked to the widespread adoption of mobile technology, which has exponentially increased content generation since 2013.
➡️ Data Analytics Utility: Understanding the technical building blocks (hashtags, API-accessible posts, and network types) is essential for effectively collecting and analyzing social media data for research or business insights.

📸 Video summarized with SummaryTube.com on Oct 21, 2026, 16:55 UTC