Here's a walkthrough I did earlier this month showing how the pieces in our publish-subscribe system fit together.  [Scripting News]

In addition to economic survival and growth, the company seeks to create a true free-market of ideas on the web, in which peers work with peers, or as citizens, rather than as passive recipients of broadcast, mass-cult, copyrighted content. Rather than rich branded messages, or monopolies that lock us all in the trunk of brand-think, Userland creates the infrastructure that lets a thousand flowers bloom, a good democratic (actually Maoist) ideal. Userland sustains the info-commons -- what Dave calls 'the two-way web.'"   [Scripting News]