Get flash to fully experience Pearltrees
My friend Fred, a talented blogger, asked me for advice the other day.
Summary: In most online communities, 90% of users are lurkers who never contribute, 9% of users contribute a little, and 1% of users account for almost all the action. All large-scale, multi-user communities and online social networks that rely on users to contribute content or build services share one property: most users don't participate very much. Often, they simply lurk in the background. In contrast, a tiny minority of users usually accounts for a disproportionately large amount of the content and other system activity. This phenomenon of participation inequality was first studied in depth by Will Hill in the early '90s, when he worked down the hall from me at Bell Communications Research (see references below).
Surprise! You may already have an OpenID. If you use any of the following services, you already have your own OpenID.
PHProjekt is a web application that helps you with planning and running your projects. If you are interested in PHProjekt but not yet convinced, take a look at our live demo . It is running the latest stable version.