Captain and Mate

This has been informative as we now know what GCRM stands for and also that there are many who agree (as we do) that it's a bad idea. Fortunately, the practice is not widespread. However, if more and more cachers were to adopt this practice it would be detrimental to the game. The caches referenced by the OP are owned by a very well-known caching team that should be setting a better example for newer members of the community.