Geocaching Maps - Beta
Geocaching.com are currently beta testing a new mapping system. The beta test is using the Google Maps API to display geocaches around the world. If you want to see how popular geocaching has become just zoom the map out and look at the world view.
There are a lot of geocaches to find!
The beta map lets you view geocahces on a Google Map but you can also use map tiles from different map providers. Currently you can also view map tiles from Open Street Map, MyTopo, MapQuest and Bing Maps.
The new map interface also allows registered users of Geocaching.com to display their own cache finds and hides, remove cache finds and filter the map by cache type.