For those of you who use Youtube: I was on Youtube and I got a message from one of my friends, it was a rather angry message in which she claims that I sent her a chain letter with a load of other usernames attached to it. But the thing is I didn't actually send her a chain message, there's nothing in the sent section of my inbox and I have absolutely no idea what she's talking about. She didn't even tell me what the message said! I'm worried that if I tell her that I didn't send the spam message she won't believe me and think that I'm lying, and I really don't want to fall out with this person over something I did not do. What would be the best course of action to take? Has this happened to other people, or am I just victim to a hacker?