I refer you to the following posting: "Our University uses dynamic addressing but we are able to identify likely users in response to the RIAA stuff. There is a hidden step in here, at least for our University, in the IP-to-Person mapping. Our network essentially tracks the IP-to-MAC relationship and the MAC-to-Owner relationship. For us, its not the IP that identifies a person, but the combination of IP plus Timestamp, which can be used to walk our database and produce a system owner. I'm guessing that Google et. al. have a similar multi-factor token set (IP, time, cookie, etc) which allows them to map back to a "person"." It is easy to back into people's identity. Regards, Roderick S. Beck Director of European Sales Hibernia Atlantic 1, Passage du Chantier, 75012 Paris http://www.hiberniaatlantic.com Wireless: 1-212-444-8829. Landline: 33-1-4346-3209. French Wireless: 33-6-14-33-48-97. AOL Messenger: GlobalBandwidth rod.beck@hiberniaatlantic.com rodbeck@erols.com ``Unthinking respect for authority is the greatest enemy of truth.'' Albert Einstein.