Presumably if the software can record all of your usage of Web it can then check if on ANY occasion you used your e-mail from your machine. Hence it can itentify your address even if on the current session you have not used it. Gerry Moss ___________________________________________________________________ Dr GP Moss Telephone: +44 171 775 3262 Department of Chemistry Queen Mary & Westfield College Facsimile: +44 181 981 8745 Mile End Road London E1 4NS, United Kingdom E-mail: g.p.moss@qmw.ac.uk World Wide Web server: http://www.qmw.ac.uk/~ugca000/chemistry.html IUPAC data base http://www.qmw.ac.uk/~ugca000/iupac.html ----- chemweb: A list for Chemical Applications of the Internet. Archived as: http://www.ch.ic.ac.uk/hypermail/chemweb/ To unsubscribe, send to listserver@ic.ac.uk the following message; unsubscribe chemweb List coordinator, Henry Rzepa (rzepa@ic.ac.uk)