Geocaching

OK, So...behind the times as usual, I discovered this "sport" called geocaching. It seems that individuals hide trinkets and post their whereabouts using GPS coordinates somewhere on the web and people go in search of these trinkets. I am sure that description does not do this hobby justice, but it sounded fun when I read about it. I may have to check into this further, it seems that there are inexpensive little treasures hidden even here in our little neck of the woods! Have you done this before?