Case 1 and 3 would be new business, you'd still have to convince those users that Instapaper is right for them, there's nothing automatic about it. Also what ma

Case 1 and 3 would be new business, you'd still have to convince those users that Instapaper is right for them, there's nothing automatic about it. Also what makes you think Instapaper is the popular brand on Android? Case 2 I'll concede but that's hardly "a lot" of users.