The ever inventive Tim O'Reilly has taken the next logical step in the Open source revolution by getting all granular on us with SafariU. The quickie from the site says
While talking with instructors and trainers about what's not working for them in the classroom ... we've come up with a solution: SafariU, O'Reilly's new web-based platform for creating, publishing and sharing textbooks. With SafariU, you can create and publish your own textbook, selecting exactly the book chapters, sections, or articles you need from the impressive Safari database. SafariU costs you nothing to use and offers your students more focused course content at less cost.