I easily hand in a dozen people a week who are trying to friend me with fake accounts. They are easy to spot. These foreigners are hoping to get in and start a routine with you that could cause you great grief. That is only the beginning of the issues with Facebook that make it a scary place to friend people.
Fake accounts are used for either soliciting money from you (one horrible feature Facebook has that I will talk about later) or they want to sneak a porn vid up on your wall.
The porn vids usually come from women in their 20s who look cute and innocent enough and have benign things on their Facebook wall and no reason for you to think anything of them. Be sure when you friend someone that you check through their entire friends list looking for oddities, such as only one sex of person they are friends with, or too many friends with slick professional model-like pictures that show a potential bunch of fake accounts. Look at their photo albums, their groups, all the details. See if they share friends with you whom you admire.
The fake accounts are easy to spot. They aren't very creative. They are usually middle-aged attractive men with professional photos of them. Their cover pic might be a battleship, air force airplane, boat, waterfront or fast car. They have no friends or few friends. Their wall has no content or little content. Their status says they are in the military or the government and they are divorced or widowed.
The real dangerous practice that Facebook has taken up that is the root of almost all the fake accounts and hacking is the $ sign in the messaging. You have the capability of giving people money from your credit card or your bank account immediately. That feature in messaging has been the big attraction for fakes.
They will either hack the account and pretend to be a friend needing cash or they will friend you and then message you a "Hi" and then go on to ask "what do you do?" "are you married?" Your suspicion should go up, as those are in your "about" profile. They will try to engage you in a conversation and follow a routine. If you call them on it, they defend and try to stay on the written routine. If you go off the routine of responses, their poor English skills begin to show. When this occurs, please report and block the person immediately. These fakers follow a very precise routine and do not seem to be able to vary much. They will eventually get you hooked into what you think is a friendship so they can ask for $ which is right there in messaging.
There is no reason in the world for a social media site hooking people up around the world who were strangers to allow the immediate passage of dollars. It is so grossly inappropriate as to being aiding the crooks.
Facebook needs to stop this practice to protect its users.