Identity Signalling
People choose products that say something about who they are, and avoid ones that say the wrong thing.
Identity signalling is the use of visible choices to communicate group membership and self-concept. It drives adoption and it drives abandonment: people drop a marker once the wrong group takes it up. Signals need to be visible and at least somewhat costly to carry meaning.
How it shows up in software
Public profiles, badges, verified marks, custom themes, and referral mentions are identity surfaces. So is the product itself when other people can see it: a laptop sticker, an email signature, a link with a recognisable domain. Signalling explains why some tools spread through visible artefacts rather than through any invitation mechanic.
Using it well
- Make something the user produces carry a discreet mark of the tool, and let them remove it on a paid plan.
- Give status markers that reflect real contribution or skill, so the signal stays informative.
- Let people control which parts of their identity are public, since a forced signal is a liability rather than an asset.
- Watch for divergence: if a signal starts attracting the wrong association, give your core users a way to differentiate rather than fighting it.
Where it turns manipulative
- Attaching a watermark or "sent via" line that cannot be removed at any price turns users into unpaid advertising against their will.
- Selling status markers that imply verification or trust, when they only imply payment, misleads everyone reading the profile.
- Building tiers whose main function is public visibility of spending encourages users to buy standing rather than value, and it fuels overspending among the people least able to afford it.
Where you have seen it
Superhuman
Appended a "Sent via Superhuman" line to outgoing mail by default, putting the signal in front of every recipient.
GitHub
Shows a public contribution graph and pinned repositories, which developers use as a professional identity artefact.
Strava
Publishes activity, kit, and club affiliation on a public profile, making training itself a visible marker.
What the research says
- Berger and Heath, 2007Mixed evidence
Across field and lab studies, people diverged from choices associated with groups they did not want to be identified with, and divergence was stronger in identity-relevant domains than in functional ones.
Multiple studies pointing the same way, mostly with student samples and self-report. Direction is well supported; generalisation to large markets is inferred.
- Berger and Heath, 2008Mixed evidence
A field study of wristband adoption in dormitories found residents abandoned a band after it spread to a group they wished to distinguish themselves from.
Single natural setting with a small population. Suggestive rather than definitive.
- Veblen, 1899Contested
Described conspicuous consumption as the display of status through visible and wasteful expenditure.
A theoretical and observational account from economics, not an experiment. It supplies the vocabulary, not the evidence.
Grades are a judgement about the evidence, not about how useful the idea is. Plenty of contested effects are still worth knowing, as long as you do not cite them as settled.