In Internet culture, the 1% rule is a rule of thumb pertaining to participation in an internet community, stating that only 1% of the users of a website add content, while the other 99% of the participants only lurk. Variants include the 1–9–90 rule (sometimes 90–9–1 principle or the 89:10:1 ratio), which states that in a collaborative website such as a wiki, 90% of the participants of a community only consume content, 9% of the participants change or update content, and 1% of the participants add content.

(“1% Rule (Internet Culture)” 2021)

Also see:

“1\% Rule (Internet Culture).” 2021. Wikipedia, November. https://en.wikipedia.org/w/index.php?title=1%25_rule_(Internet_culture)&oldid=1q053243579.