For some reason a junk email was sent to some on my contact list on my Hotmail account. I got the 1st clue yesterday while sitting next to my daughter, who got an email from me on her IPOD, while I was sitting next to her. I look this morning and got several emails from those contacts asking me why I sent this. Its an advertising for work at home site. I don't know a lot about computers, so could someone tell me how this could happen and how to prevent this??