I guess there is a bug in this API: POST /:user/:id/members when on web, if I'm not following a guy who has protected his tweets, I don't have a way to add this guy to any of my lists. however, I can do this through API method. Even tho this guy protects his tweets, he's been added to my lists. sure I can't see his tweets, but he's in my list.
So, is this a bug?
