The Art & Science of Virality in Web Applications

The Art & Science of Virality in Web Applications

@amitranjan
@amitranjan
35 Followers
2 months ago 122

The Art & Science of Virality in Web Applications

@amitranjan2 months ago

The Art & Science of Virality
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Sorry for the all-caps:)
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What is Virality?
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- Virality: Ability of an object to self-replicate
- Think pathological diseases 
- Often mixed w…
4/20
Virality in Web Applications
- Single minded focus on acquiring new users 
- Get users to spread …
5/20
Putting it differently... 
Virality is marketing BUILT INTO the 
product… if the product is viral…
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Ways to go Viral
- Social Graph: Facebook, Twitter, IG
- Network Effects: IM, Whatsapp, Telegram
…
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Viral Coefficient – The secret sauce 
Viral Coefficient is the number 
of additional members ever…
8/20
Viral Coefficient < 1 
• grows initially but hits ceiling
Viral Coefficient > 1
• growth unbound…
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Why viral 
coefficient > 1
All figures hypothetical
YouTube FaceBook Instagram
10/20
Within an app, channel with highest viral coefficients dominates 
Illustrative example for hypothe…
11/20
The Mathematics of Viral Growth
User CTA - invite friends
x = invited
 friends
Accept?
Yes
y%…
12/20
Designing a viral loop
Conversion Funnel Distribution Channels
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Viral Loops: Distribution Channels 
- Invite a friend 
- NewsFeed 
- Embeds / widgets 
- Notifi…
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- Validate Use Case : Will they use it?
- Test CTA (call to actions) : Will they click it?
- Trac…
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Flow A
Flow B
A new users
B new users
X% user dropoff Y invites sent/user Z% invites accepted
…
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Viral channels NOT EQUALS features
- Viral channels bring new users
- Features keep existing user…
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Viral Channels LifeCycle
-Viral channels eventually decay (saturation, user conditioning)
- When …
18/20
The Social 
Participation Ladder
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Questions?
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