Apparently the school likes jerking around poor high school seniors: "Virtually everyone who has used e-mail knows the feeling: You press the send button and realize that you just sent something embarrassing to someone by mistake.That happened to Cornell University on Wednesday: It sent welcoming letters to 1,700 high school students who had submitted early-decision applications, including nearly 550 who had already been rejected in December. "Greetings from Cornell, your future alma mater!" the e-mail letter began. "Congratulations on your acceptance into the class of 2007!" "...