Viral product
Normal use of the product exposes it to non-users: a share, an invite, a public artifact.
State of the channel in 2026
The best channel when it exists. But it is decided in product design, not in marketing.
How to prove it is this channel
- A shared artifact carrying the brand (link, page, export)
- A high invites-per-user ratio
- Growth that tracks no spending line
What it demands
- A moment where the user has a selfish reason to share
- Zero friction for the recipient
- A product that is multiplayer by nature
What this channel actually sells
Growth that keeps going the month you cut the entire marketing budget.
You never sell the product on a channel. You sell the benefit it ends up producing, and you fit the product inside that.
What to measure
- New users per active user (the k-factor, everything else is noise)
- Share of signups arriving through a shared artifact
- Time from signup to first share
The trap
Bolting a referral program onto a product nobody has a selfish reason to share. The loop is a design decision, not a growth tactic.
The generic playbook
- 1Find the moment where sharing serves the user, not you
done whenYou can name the exact moment sharing helps the user, not you.
- 2Let the shared artifact carry the brand, quietly
done whenThe artifact carries the brand and nobody has complained about it.
- 3Remove every mandatory signup on the recipient side
done whenA recipient can use the thing before creating an account.
- 4Measure new users per active user. Everything else is secondary
done whenNew users per active user is a number you check weekly and can say out loud.
36 products ran this
Is this channel actually yours?
Describe your product. You get back whether this play holds for you, or which one I would run instead.