Facebook recently said there were more than 83 million accounts are not valid on these social networks. Indonesia and Turkey highlighted in a BBC investigative report as the most committed abuse it. In these countries, Facebook has grown very rapidly.
In the publication last week, the BBC said, as much as 8.7 percent of the 955 million active accounts known to break the rules. One is a dual account - an account owned by the user that has previously been registered - rose to 4.8 percent of total membership.
While the classification error was recorded at 2.4 percent, including a personal profile is used for business or their pets. In addition, 1.5 percent of the user account that is described as "undesirable".
Classification error is "if the user has created a personal profile for your business, organization, or non-human organisms, such as pets." While the account "undesirable" including those using fake names "is intended for purposes that violate our terms of service, such as spam."
The estimate comes when there is concern about the effectiveness of marketing on social networking sites.
Facebook Platform business relies on targeted ads. Data showed that more than 80 million users, which consists of duplicating accounts, spammers, and pets, not an attraction for advertisers. Some advertisers have been challenged to prove that Facebook just click on their ads are "real".
Last month, for the sake of the investigation report, the BBC set up a fake company called VirtualBagel. They found most of the "Like" for fake companies, which originated from the Middle East and Asia.
Last week, the company's digital distribution Limited Press stated, based on analysis of their software, 80 percent of clicks on ads in Facebook come from fake users.