Objective: Improve constructive activation for new editors while reducing edit revert rates.
Approach:
• Designed and analyzed a two-arm randomized controlled experiment (control vs treatment).
• Leveraged a phased rollout from 2% to 20% exposure.
• Used intent-to-treat analysis on edit and revert data.
Key results (mobile web):
• Constructive activation: +33.7% relative lift (17.2% vs 12.9%)
• Constructive retention: +3.7% relative lift (3.1% vs 3.0%)
• Revert rate: −19.6% relative reduction (32.0% vs 39.8%)
Published: Wikimedia Analytics Report · June 2025
Drove a +33.7% lift in new editor activation on English Wikipedia mobile web by evaluating a structured Add-a-link feature. The experiment also reduced edit reverts, improving contribution quality at scale.
Read the report