I'm not sure if you're trying to bash Microsoft here or not, but I'm going to assume you were genuinely curious.<p>The reason that most people are following him (anecdotally anyway) is that he's a well known (the most well known?) and successful person in the tech space who has just joined. There isn't any reason why he can't turn off seeing "@ replies" from people he doesn't follow either - doing that will only show tweets from people you follow. Twitter's settings are pretty configurable for users who have tons of followers.