B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
12%
12% -- share of users with negative social influence on purchases for Cyworld users (2026)
12% of Cyworld users experienced a negative social effect/influence of friends' purchases on their own purchases.
- Based on a sample of 208 users over a 10-week period on Cyworld
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
12%
Unit
Percentage
Data Vintage
2026
Entity
Sample Size
208
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Harvard Business School
Primary
Tier B
http://reputationaldemocracy.wordpress.com/ ↗
Source Article
Social Media Strategy
Original Research
Harvard Business School
· Original study ↗
Methodology
Harvard Business School study using 10 weeks of purchase and non-purchase data from 208 Cyworld users
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Cyworld users: 12% share of users with negative social influence on purchases. Source: Harvard Business School (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/cyworld-social-effect-negative-users
HTML Embed
<blockquote cite="https://lighthousedata.io/data/cyworld-social-effect-negative-users" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>12%</strong> -- share of users with negative social influence on purchases for Cyworld users<br><small>Source: Harvard Business School (2026) · <a href="https://lighthousedata.io/data/cyworld-social-effect-negative-users" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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