- Googleのバイスプレジデントである Bradley Horowitz 氏の書いた記事 - https://blog.elatable.com/2006/02/creators-synthesizers-and-consumers.html - 1/10/100の法則 ``` - 1% of the user population might start a group (or a thread within a group) - 10% of the user population might participate actively, and actually author content whether starting a thread or responding to a thread-in-progress - 100% of the user population benefits from the activities of the above groups (lurkers) ```