Here's a thought, if you plan on going to a Taylor Swift concert anytime soon it might be a good idea not to threaten her on Facebook before you go. Oh, and you might want to leave your "Taylor is with Satan" signs at home too. Those are definitely rules that 28-year-old Joseph Jackson might want to live by in the future after he was arrested on Saturday at Taylor's concert at Heinz Field in Pittsburgh. Police spotted him easily in the crowd of 57,000 fans because he was the one holding two signs, one that said “I luv you” and the other that said “Taylor Swift is with Satan.” And I thought I had trouble making up my mind. This could have been a free-speech issue, but police say that Joseph had also made threats against Taylor earlier on Facebook, although they didn't specify exactly what he said. He did, however, tell arresting officers that “Taylor Swift is Satan and that 6,000 years is six days and death comes on the sixth day, so Taylor Swift is in danger.” Ugh. Creepy. Remember, boys and girls, Big Brother is watching and he's a Taylor Swift fan.