Three years ago, I first used Moodle as a teacher of English to students who understood no English--they loved Moodle. With no programming experience, it was simple to set up my own server using the excellent installation documentation. Questions were answered on the free service forums in hours, not days. Although I use it for smoothly for 150 simultaneous students, Moodle is scalable to over 30,000 learners. In version 1.5, you will find a much improved quiz module, faster chat, customizable themes, more standards-compliancy, instant messaging, flexible blocks--all in 60+ languages. It is so easy to expand, I have 5 student programmers making a new module at my school for handling projects. Because it is open source, this module will be freely available to all schools along with Moodle which will always be free. The best part is the interface, which is intuitive for teachers and fun for students. All user comparison studies point to Moodle as superior to Blackboard and WebCT, except in price.