> For the complete documentation index, see [llms.txt](https://metya.gitbook.io/metya/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://metya.gitbook.io/metya/appendices/data-methodology.md).

# Data Methodology

* Active users: DAU/WAU/MAU with a unified de-duplication policy (documented).
* GMV: Settled transactions only; voids/full refunds excluded.
* Anti-cheat: Low-quality ME excluded from denominators; outlier removal rules disclosed in monthly reports. Public dashboards apply aggregation + differential privacy to mitigate re-identification risk.