B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
60%
60% -- referral program signup increase for Dropbox (2026)
The Dropbox referral program led to a permanent 60% increase in signups.
- Historical case study recounting Dropbox's referral program results without specific original date citations.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
60%
Unit
Percentage
Data Vintage
2026
Entity
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
60
Freshness
95
Source
Dropbox
Primary
Tier C
https://rebusadvertising.com/blogs/what-is-growth-hacking/ ↗
Source Article
What Is Growth Hacking: A Beginner's Guide
What Is Growth Hacking: A Beginner's Guide
So, what’s all this “growth hacking” buzz about, really?
At its core, growth hacking is a process of rapid-fire experimentation across every part of your business—from marketing and sales to product development—all to find the fastest, most efficient ways t…
Original Research
Dropbox
· Original study ↗
Methodology
Marketing agency blog recounting Dropbox's widely cited two-sided referral program result from its early launch period; no original citation or study is referenced. Describes a permanent lift in signups attributed to the referral program, republished in this 2026 guide.
Methodology documented
Segmentation
IndustryB2C
Company SizeAll sizes
RoleAll marketers
Channelreferral
Cite this stat
Plain Text
Dropbox: 60% referral program signup increase. Source: Dropbox (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/dropbox-referral-signup-increase-60
HTML Embed
<blockquote cite="https://lighthousedata.io/data/dropbox-referral-signup-increase-60" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>60%</strong> -- referral program signup increase for Dropbox<br><small>Source: Dropbox (2026) · <a href="https://lighthousedata.io/data/dropbox-referral-signup-increase-60" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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