Staying on the Google Earth theme, HB9TLK has created a site pinpointing hams that have submitted their long/lat. This is then exported to their Google Earth KMZ file for download. Useful if widely adopted – it would be neat to be talking to someone halfway round the world while exploring their local landmarks.
Check it out: http://www.qslnet.de/member/hb9tlk/hamweb.html