About this whole facebook thing, there's a scam going on and about a week ago the same thing happened to my sister. She had no idea until a friend asked why she was using two accounts. There is a scam going on where someone makes a profile with your pictures and sends friend requests. Maybe the person/people doing this will finally get caught due to using an account the police might be watching.
http://www.ricksdailytips.com/beware-duplicate-friend-requests/
Now there is a type of scam making the rounds that is even more insidious than most. Scammers are making virtual copies of real Facebook accounts by copying the photos and info from the real accounts About page to the fake ones. They then send friend requests to the friends listed on the real account.
Once the scammer has most or all of the original account holders friends onboard, there are countless ways those friends can be scammed because, well, we tend to trust our friends, right?
One of the most common scams perpetrated after a fake account has been created and populated with your friends is messaging you asking for money to help get them through some crisis.