Facebook's share price dipped below $20 on Thursday after reporting slowing growth and an admission of an alarming number of fake accounts.
In a quarterly filing with the Securities and Exchange Commission, the social media company said that as many as 83 million of its accounts are fake.
It also reported that as many as five percent of its active users have duplicate accounts.
Facebook members grew to 955 million this year.
It says 1.5 percent of its accounts are likely spam or accounts set up for other malicious activity. The fake accounts are concentrated in developing markets, according to the filing.
It also blames people who set up accounts for non-human entities, such as pets.
There are "inherent challenges" in measuring usage," the social network said.
"We are continually seeking to improve our ability to identify duplicate or false accounts and estimate the total number of such accounts, and such estimates may be affected by improvements or changes in our methodology," the filing continued.
The number of real users is important for Facebook as it seeks to sell advertising.
Facebook shares are down almost 50 percent from its $38 May IPO.
Sunday, May 19 2013 12:24 AM EDT2013-05-19 04:24:33 GMT
Officials in Connecticut say it was amazing that there were no fatalities or more injuries after two Metro-North trains collided around 6 p.m. in Fairfield Friday evening.
Officials in Connecticut say it was amazing that there were no fatalities or more injuries after two Metro-North trains collided around 6 p.m. in Fairfield Friday evening.
Sunday, May 19 2013 12:13 AM EDT2013-05-19 04:13:53 GMT
The NYPD says a 14-year-old girl was shot and killed on a Queens MTA bus Saturday night. The incident happened around 8:50 p.m. on board the Q-6 bus on Sutphin Avenue and Rockaway Boulevard
The NYPD says a 14-year-old girl was shot and killed on a Queens MTA bus Saturday night. The incident happened around 8:50 p.m. on board the Q-6 bus on Sutphin Avenue and Rockaway Boulevard
Sunday, May 19 2013 12:05 AM EDT2013-05-19 04:05:15 GMT
Authorities say one person is dead and another was injured when the vehicle they were in ran off the road and crashed into Huntington harbor on Long Island Saturday evening.
Authorities say one person is dead and another was injured when the vehicle they were in ran off the road and crashed into Huntington harbor on Long Island Saturday evening.
Saturday, May 18 2013 10:14 PM EDT2013-05-19 02:14:35 GMT
An airline official says a US Airways flight with 34 people aboard was forced to make a belly landing at Newark International Airport after experiencing landing gear trouble. No injuries were reported.
An airline official says a US Airways flight with 34 people aboard was forced to make a belly landing at Newark International Airport after experiencing landing gear trouble. No injuries were reported.
Saturday, May 18 2013 8:33 PM EDT2013-05-19 00:33:09 GMT
A 12-year-old boy was shot and killed and his father was wounded on a Jersey City street Friday night. Police say Gywan Levine Jr. and his father, Gywan Levine Sr., were walking on Rutgers Avenue
A 12-year-old boy was shot and killed and his father was wounded on a Jersey City street Friday night. Police say Gywan Levine Jr. and his father, Gywan Levine Sr., were walking on Rutgers Avenue
Saturday, May 18 2013 6:52 PM EDT2013-05-18 22:52:45 GMT
A large crowd of supporters in the Bronx joined the parents of a slain teen to protest a judge's ruling Saturday. Constance Malcolm and Francelot Graham whose son Ramarley was killed back in February
A large crowd of supporters in the Bronx joined the parents of a slain teen to protest a judge's ruling Saturday. Constance Malcolm and Francelot Graham whose son Ramarley was killed back in February
