I would have to say no to it. Even if it is not exactly like the sex registry in implementation there will always be those that will be put on it when they shouldn't have been. And I agree with the person that mentioned PETA. PETA folks are....for lack of a better word "insane" when it comes to animals and I have no problem seeing them use it in a malicious way. Such as finding the person and beating them to near death if not death period. Hell, that happens with the sex registry...not often granted...but then most people are not like those in PETA.
I also agree with the person that mentioned making registries for such things as not wearing ones seatbelt. Where does it stop? Our government makes enough damn laws and ways to keep people sucking on its teet. We don't need more ways...no matter how well intentioned. Which reminds me of that old saying..."The road to hell is paved with good intentions".