User blog comment:Dopp/Message Wall Now Available in Labs/@comment-3136913-20120130011554/@comment-4253512-20120201224617

I agree. While its true its not private, nobody wants to know what I want to say to a user of what he's been editing on the wiki or how to do X thing that most people already know how, its specific to the person I'm replying to, others can read it but it's not something that concerns them. And if others want to read it, they can just go and see the whole conversation, they don't need to get the messages on the wiki activity.