Well today I figured it out and have coined the phrase "Tweeployee" the official definition I give the word is
tweeployee: the underling employed by celebrity tweeters to handle to replies they don't have the time or inclination to handle them selves.
So there you have it, if you need a tweeployee you know that you have hit the big time in the world of twitter.
So @aplusk @mrskutcher @iamdiddy @ryanseacrest @tonyrobbins @johnmayer @rove1974 @dhughsey @lancearmstrong @wendydavie @kimkardashian @guilianarancic do tell when you have your first tweeployee