I am severely being stalked on yahoo answers, is there anything left I can do ?

The man is just trying to frighten you. He may also be stalking you online and if he continues to do it, immedeatly contact the police. The man could be very dangerous and could send you very mean and threatening messages so contact the police as soon as hge continues. If the man is what he says he is. Than contact the police. Anyway contact the police