Correct me if I'm wrong but there's many sites that already offer location-based queries, the first being Google. Just go to Google Mobile (www.google.com/m) and you can make a search based on your location (My default location in Google Maps for now).

So, all is needed is a small applet on our tablets that will update sites like Google Mobile, Google Maps, or Wikipedia as mentionned by Vabgeo so the default location is the current GPS coordinates.



Vincent