They could do some work on the (privacy) protection of those registries, for example by making the URLs of registry a little harder to guess. (Yeah, I know, adding obscurity instead of security, but nevertheless).

I wanted to see an example list, didn't knew a valid first and last name to search for, so guessed http://registrylove.com/registries/ and some low ID number after that. Pronto!

I don't know if some Daisy & Javier mind that I can see their wishlist for their wedding. Personally I would have wanted to keep that list a little more private to only those people knowing I had registered my list at RegistryLove.