What happen often these days is someone sending me a link on MSN. I receive a message telling me to, for example, "have a look at the photos of both of us on MySpace". The link contains in fact a file, which pretends to be an image, but is in fact an executable (where viruses usually lurk). Last time someone contacted me this way, I sent back a few messages to get confirmation (I didn't doubt it was a scam, as I had never met this person). I then contacted the same person through another channel, and this person confirmed me that he/she had never sent me the messages, and had never received mine in return. This probable meant that a
malicious bot had logged on his/her account to send the messages and the virus.
This is the reason why you mustn't trust even people you trust, for the simple reason that they may be impersonated. The best way to be sure is to get a confirmation from the person that a bot couldn't give you (a simple question often does it).
The real sign that someone has become a fanatic is that he completely loses his sense of humor about some important facet of his life. When humor goes, it means he's lost his perspective.
Wedge Antilles
Star Wars - Exile