Practice family · OECD-aligned working taxonomy

Social proof

Uses claimed behaviour, approval or popularity among other people to accelerate or steer a decision.

This family contains 3 canonical practicesand 6 paired fictional interface examples. It is a learning and review structure, not a statutory category, regulator finding or conclusion that a particular interface is unlawful.

Recognition

Signals to investigate

Begin with observable interface states and sequences. These signals are prompts to preserve evidence and ask better questions; they are not a shortcut to the elements of an Australian legal test.

  • Other people’s behaviour, approval or popularity is used to steer a decision.
  • The population, period, relationship or metric behind the claim is unclear.
  • Commercial placement or sponsorship resembles independent recommendation.

Fairer design

Principles for a more neutral choice

A fairer alternative should preserve the person’s intended task while making consequences, alternatives and changes of mind usable. It is a practical comparison, not a legal safe harbour.

  • Use social claims only with current, relevant and supportable evidence.
  • Disclose paid, employed or sponsored relationships at first exposure.
  • State the metric and period or replace popularity claims with factual product information.

Lifecycle coverage

Where social proof mechanisms can appear

Review complete transitions rather than isolated screens. The same mechanism can change meaning when a person is comparing prices, confirming a purchase, managing an account or trying to leave a service.

Canonical library

Social proof practice guides

Each guide provides a plain-language definition, inclusion and exclusion boundaries, at least two paired HTML examples, fairer alternatives, review questions, evidence prompts and a context-specific Australian legal-information map.

Evidence-led workflow

Move from a signal to a reviewable record

  1. Reproduce the relevant journey with a clean account and preserve every state, option, disclosure and price before the consumer decision.
  2. Name the observable mechanism and check the inclusion criteria and legitimate-use boundaries on the relevant practice page.
  3. Verify operational facts behind availability, timing, ranking, pricing, consent and account state instead of inferring them from interface copy.
  4. Record the person’s intended task, realistic alternatives, likely effect and potential financial, privacy, time or autonomy detriment.
  5. Apply current ACL provisions and the enacted 2027 framework as separate legal layers, note pending material and retain the dated review decision.

Evidence base

Sources

  1. Dark commercial patternsOrganisation for Economic Co-operation and Development · Secondary · checked 2026-09-14 · OECD Digital Economy Papers No. 336
  2. Competition and Consumer Amendment (Unfair Trading Practices) Act 2026Federal Register of Legislation · Primary · checked 2026-09-14 · C2026A00064
  3. Competition and Consumer Act 2010, including Schedule 2: Australian Consumer LawFederal Register of Legislation · Primary · checked 2026-09-14 · C2004A00109