I think I gave my password to both Daniel and Matt when we were dating, though that was many years ago. Prior to being on staff, I temporarily shared my password with someone for some reason to do with a prank or something. (It has long since been changed several times).

I've made second accounts for events and miscellaneous things, not to use as an actual second-posting member account. Giving away an account and sharing an account sounds strange to me and I'm not quite certain why one would do such a thing.