Can I bring to your attention http://www.xrefer.com/ which I find a useful site yielding high value information on most general science topics (and in my experience lots of valuable chemistry). An interesting alternative to the recent discussions about chemistry preprints is the other end of the spectrum; http://www.publiclibraryofscience.org/ "established to organize support within the scientific community for online public libraries of science, providing unrestricted free access to the archival record of scientific research." xrefer, despite being a dot com, appears to be one such! And to conclude, I have found one interesting difference amongst conventional chemistry journals. It is becoming more common for authors to submit "active" supplemental information with their articles nowadays. I happen to know that the RSC has a non-exclusive right to copy such material, ie the author can re-use such materials in other appropriate contexts. I suspect that at the other extreme, some publishers retain identical exclusive copyright to supplemental materials, not differentiating them from the articles themselves. A few years ago, the cummulative bulk of these materials was insignificant, but that is no longer true. Perhaps this is one large and neglected area of chemistry, residing somewhat in no-mans-lands, being neither preprint, nor a complete archival record of scientific research, and the legal status of which is often uncertain. -- Henry Rzepa. +44 (0)20 7594 5774 (Office) +44 (0870) 132-3747 (eFax) Dept. Chemistry, Imperial College, London, SW7 2AY, UK. http://www.ch.ic.ac.uk/rzepa/ 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)