FaceBook is a social network extension in the Internet world. Therefore, the network is adding to an unknown friend well enough to allow the smuggling of stolen or fraudulently concealed in various organizations.
FaceBook expanding social networks in the Internet. Thus, the added network is not well enough known. To contribute to the fraud. Or the infiltration of various deceptive movement.
FaceBook expands the social networks in the Internet. So having more friends network know well enough. Will cause a stealth steal data. Or movement of the various scams lurk.