I am a registered member of gc.com, so I can get to the cache page. I'm not suggesting you do anything different. I just wanted to share my thoughts based on your reasoning. One side-effect of making a cache subscriber-only is that it prevents those who want to geocache but don't want to pay the annual membership fee from finding the cache under their own ID. That limits the exposure of the cache from what it could be. Since noone knows who the cache thief is, he could be a registered gc.com member,. Creating the cache as subscriber-only wouldn't necessarily prevent him from continuing his dastardly deeds. In fact, it might attract his attention, instead.