I have already tested the Navteq error reporting, and it works! Of course, the delay to correct their error on all their systems (very numerous systems use their database) is long, but it works. Several months after my reports, I was pleased to see that all the reported errors were corrected in the various different (and updated) Navteq various systems I am able to check. I used their map feedback at http://update.navteq.com/ Christian. -----Message d'origine----- De : math-fun-bounces+cboyer=club-internet.fr@mailman.xmission.com [mailto:math-fun-bounces+cboyer=club-internet.fr@mailman.xmission.com] De la part de Daniel Asimov Envoyé : lundi 13 novembre 2006 22:52 À : math-fun Objet : [math-fun] (off topic) Geographical data base error In looking up the telephone number of a store I shop at, I typed its name & approx. location into Google and got the info I sought . . . plus a map that showed the wrong location (on the right street), off by about a mile. Since then I've typed the address into MapQuest, and separately into the Microsoft map software on the store's own website -- and ALL of them show the wrong location on the right street. (I called the store just to confirm that they were exactly where I thought they were, in case they had just moved or something. They were indeed where I thought. So here's the problem -- How do I figure out who provides the evidently common database that is being used by Microsoft, Google and MapQuest so I can try to get them to correct the error? (Contacting the three mapping software companies mentioned is, I quickly found, not going to help at all -- it's seemingly impossible to reach anyone with any chance of knowing how to reach the source of the problem.) --Dan _______________________________________________ math-fun mailing list math-fun@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/math-fun