1% rule - Wikipedia

Pie chart showing the proportion of lurkers, contributors and creators under the 90–9–1 principle In Internet culture, the 1% rule is a general rule of thumb pertaining to participation in an Internet community, stating that only 1% of the users of a website actively create new content, while the other 99% of the participants only lurk. Variants include the 1–9–90 rule (sometimes 90–9–1 principle

[TaKUMA]

1-9-90 rule or 90–9–1 principle: 90% of the participants of a community only view content, 9% of the participants edit content, and 1% of the participants actively create new content

[tkys0628]

ユーザーの1％がコンテンツを作成し、9％が編集とキュレートをし、90％がただ座って見るだけ

[soulman333]

1% rule (Internet culture) - Wikipedia, the free encyclopedia