Following a successful experiment on mobile web, we will scale the improved logged-out edit warning message to all Wikimedia wikis. The updated experience more clearly and positively encourages account creation while maintaining access to temporary account editing.
After just over one month of experimentation (since March 17, 2026), results show a statistically significant increase in account creation (p = 0.038), with a 27% relative lift among users exposed to the updated warning. This shift is accompanied by a 16% relative decrease in temporary account creation (a decrease is expected). Downstream contributor metrics were also monitored in this experiment, but there was no significant impact on constructive edit rates or other metrics monitored.
User Story
As a logged-out user attempting to edit on mobile, I want to be guided toward account creation through a clear, supportive, and approachable message so that I understand the benefits and feel confident getting started.
User Problem
The current logged-out edit warning on mobile can feel abrupt and overly technical, emphasizing editing without an account rather than encouraging account creation. This framing may discourage participation or lead users toward temporary accounts without understanding the benefits of registering.
There is an opportunity to improve both tone and visual hierarchy to better support users at this critical entry point, making editing feel more accessible while clearly presenting account creation as the primary path.
Supporting Data
Experiment reached statistical significance (p = 0.038)
+27% relative increase in account creation (treatment vs. control)
−16% relative decrease in temporary account creation
No significant change in constructive edit rates
| Treatment | Control |
|---|---|
 |  |
Acceptance Criteria:
- Scaling the updated logged-out warning UI and messaging to all Wikimedia wikis on mobile web
- All instances of "Sign up" should be changed to "Create account"
Out of scope: Desktop warning experience (to be evaluated separately)
