All the recent messages and the discussion about copyright are very interesting. It may be interesting to report my experience with a website at WHO (World Health Organisation). In springtime 1999 there was an announcement for a permanent education program on environmental health and I sent a course (about 20 slides and text) entitled "Occupational Hygiene - an introductory course" that was accepted and appeared at the website http://www.who.int/peh-super/OCCUPATIONAL/index.htm on August. There was no agreement about copyright. On February 2000 website and all courses of the permanent education program simply disappeared. I sent two e-mails to ask for explanation and possibly for consent to use the course on another website, but never got any answer. How do you call that behaviour? Best regards and compliments Mariarosa Re chemweb: A list for Chemical Applications of the Internet. To post to list: mailto:chemweb@ic.ac.uk Archived as: http://www.lists.ic.ac.uk/hypermail/chemweb/ To (un)subscribe, mailto:majordomo@ic.ac.uk the following message; (un)subscribe chemweb List coordinator, Henry Rzepa (mailto:rzepa@ic.ac.uk)