BuildingGreen has launched the LEEDuser, an online tool supported by the USGBC that serves projects using the five recently launched LEED 2009 rating systems: New Construction, Core & Shell, Schools, Commercial Interiors, and Existing Buildings Operations & Maintenance. With a goal of demystifying LEED, the new tool provides diagrams, checklists and credit language guides. It’s available now in beta version with free registration, and in October, 2009, will become available by subscription at a single-user rate of $15 per month, in addition to other options.