I've mentioned internet encyclopedias before; add this to the list. GNUpedia [via slashdot] is a just-started project for a free (non-restrictive license, free to access), distributed (not stored on central server, mirrored) reference source. Check the project announcement for more. It sounds to me like an open directory (eg dmoz) specialising in documents, and pulling in the indexed content. A good idea, but I'm not sure whether it'll fly. The "celebrity" backing and publicity will certainly help.