I don't really understand why this is evoking such a negative reaction. :/ It seems pretty harmless to me. Lots of users on this forum list what snakes they have in their profile or in their signature (myself included), and no one's ever suggested that it's dangerous to put that information out there. I don't see how a registry would encourage a thief to try to steal from me any more than listing my snakes anywhere else would. It seems fairly benign to me.