In our continued watch of "Celebrities Joining Twitter 2010," we've received word that the dolphin-smooching, out-of-work Conan O'Brien is the latest to sign up. With the simple Twitter handle of "ConanOBrien," the former late night talk show host has tweeted just once, but already has more than 245,000 followers at the time of this posting. … Continue reading Conan O'Brien tweets a plea for help