Reverse Beacon Network - brilliant resource

A couple of times in the last few days the Reverse Beacon Network (a worldwide network of receiving stations automatically uploading spots to to the internet) has come to my aid. Today for example: a couple of CW calls on 28.060 with 5W to the halo got no audible replies, but a RBN report from PJ2T in Curacao in the Caribbean at 10dB S/N on CW proved my signal was getting a very long way.   A few days ago I found my brief call had been copied in K3 land (that's the call district and not the Elecraft factory)..