Facebook filed new documents with the SEC this week that detail some interesting statistics about its user base.
Many people might be surprised to discover that 8.7 percent of all Facebook accounts are fake, duplicates or used for malicious purposes. This breaks down to 83 million accounts based on the stated user based of 955 million. This is a pretty dramatic increase over the figures Facebook released in March of this year. Facebook then estimated that the number of fake accounts to be 5 to 6 percent.
Details here:
http://facecrooks.com/Internet-Safety-Privacy/over-14-million-facebook-accounts-used-to-spread-spam-and-scams.html