I have been working on a mac all my life (I am 15). I went to ebaumsworld.com to look at some jokes, when looking a pop up comes up saying I have a virus and I am redirected to a page everytime I go there. Whats up? I know macs can't get viruses but they can get a trojan. What exactly is a trojan? I am wondering if this has happened to anyone just a random pop up blocker but then it sends you to a different page?