While many people have used Facebook to do some good, a small portion of the service's 901 million diverse users has been using the social network to do the complete opposite.

A disturbing report by WND's Chelsea Schilling uncovers what she calls the "dark underbelly of Facebook," a community of members who blatantly promote and share child pornography using their personal Facebook accounts and Facebook groups. To be sure, while the content can be found on Facebook, it was posted by third-party users of the site and violates Facebook's terms of use.

Through alias Facebook profiles, which were used to friend suspected pedophiles and child predators, WND found dozens of child porn pictures and identified predator communities. Schilling's report even lists the names of 19 different Facebook groups and likable pages currently or previously available to the public; among them are groups like "PTHC," or preteen hard-core pornography, and "12 to 13 Boy Sex."

The majority of the 19 groups mentioned by Schiller no longer appear to exist; however, six groups, including "Gangbanging," "Incest" and "Bl-wjob Fan Page," have the same names as those Schillings found and are currently active. We even discovered a few that weren't on Schillings' list but had similar, disturbing names. For example, the page shown below was easily found on Facebook, has acquired a number of "Likes" and has featured only three posts since its creation in October 2010. (You can read the rest of Schilling's alarming report here.)

LOOK:

facebook child porn

While Schilling's findings are troubling, to say the least, unfortunately, this is far from the first time Facebook has been used to share and promote child pornography.

As recently as May 2, Pennsylvania teen Neil Geckle was arrested for downloading photos of female minors off of Facebook, digitally editing an image of genitals into them and then reposting the edited pictures onto the girls' Facebook profiles.

However, while child pornography is still an unfortunate problem for the social network, Facebook has been taking steps to weed out the offenders.

Back in 2010, Facebook helped Australian authorities shut down an international child pornography ring operating on the site. And last year the social network partnered up with Microsoft to crack down on child pornography through the use of Microsoft's PhotoDNA software, which can search through billions of images and identify which of them may be inappropriate.

At present, Facebook's current Statement of Rights and Responsibilities, which all members must agree to in order to use the social network, clearly prohibits pornography of any kind.

"You will not post content that: is hateful, threatening, or pornographic; incites violence; or contains nudity or graphic or gratuitous violence," the statement reads in part.

UPDATE: A Facebook rep has provided the following statement regarding this issue:

Nothing is more important to Facebook than the safety of the people that use our site and this material has absolutely no place on Facebook. We have zero tolerance for child pornography being uploaded onto Facebook and are extremely aggressive in preventing and removing child exploitive content. We scan every photo that is uploaded to the site using PhotoDNA to ensure that this illicit material can't be distributed and we report all instances of exploitative content to the National Center for Missing and Exploited Children. We've built complex technical systems that either block the creation of this content, including in private groups, or flag it for quick review by our team of investigations professionals.

We've worked with the National Center for Missing and Exploited Children and the New York State Attorney General’s Office in the U.S., as well as the Child Exploitation and Online Protection Centre in the U.K., to use known databases of child exploitive material to improve our detection and bring those responsible to justice.

We feel we've created a much safer environment on Facebook than exists off-line, where people can share this disgusting material in the privacy of their own homes without anyone watching. However, we're constantly refining and improving our systems and processes and building upon our relationships with NCMEC and law enforcement agencies specializing in child protection to create an even safer space.

Among its efforts to keep child pornography off its site is Facebook's longtime partnership with New York's Attorney General's Office, first forged with Andrew M. Cuomo back in 2007. The social network currently uses a database created by the New York Attorney General's Office, which contains the numerical fingerprints, or "hash values," of more than 8,000 child pornography photos, to prevent the spread of these images on the site.

According to Facebook, if an account is suspected of involvement in "illicit activity," such as child pornography, the site investigates "associated objects (groups, Pages, and images etc.) and associates." In addition, all accounts that have been disabled, removed from the site or found to be involved in child pornography activity are preserved in order to aid law enforcement officials should an investigation ensue. The site often brings up such cases with both domestic and international law enforcement to further help in apprehending and convicting those behind the activity.

What do you think of Schilling's findings? What kind of steps do you feel Facebook should make to fix this problem? Share your thoughts with us in the comments!

Related on HuffPost:

Take a look at the slideshow to see some of the most common Facebook scams to avoid.
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  • Clickjacking

    Clickjackers on Facebook entice users to copy and paste text into their browser bar by posting too-good-to-be-true offers and eye-catching headlines. Once the user infects his own computer with the malicious code, the clickjackers can take control of his account, spam his friends and further spread their scam. For example, clickjacking schemes hit Facebook soon after bin Laden's death and spread like wildfire by purporting to offer users a glimpse at <a href="http://www.huffingtonpost.com/2011/05/04/bin-laden-death-video-hoax_n_857730.html" target="_hplink">video or photos of bin Laden's death</a>.

  • Fake Polls Or Questionnaires

    If you click on an ad or a link that takes you to questionnaire on a site outside Facebook, it's best to close the page. When you complete a fake quiz, you help a scammer earn commission. Sometimes the quiz may ask you to enter your mobile number before you can view your results. If the scammers get your number, they could run up charges on your account.

  • Phishing Schemes

    Phishers go after your credentials (username, password and sometimes more), then take over your profile, and may attempt to gain access to your other online accounts. Phishing schemes can be difficult to spot, especially if the scammers have set up a page that resembles Facebook's login portal.

  • Phony Email Or Message

    <a href="http://www.facebook.com/help/?page=1187" target="_hplink">Facebook warns</a> users to be on the lookout for emails or messages from scammers masquerading as "The Facebook Team" or "Facebook." These messages often suggest "urgent action" and may ask the user to update his account. They frequently contain links to malware sites or virus-ridden attachments. They may even ask for your username and password. The best advice Facebook offers is to report the sender and delete the messages without clicking anything.

  • Money Transfer Scam

    If a friend sent you a desperate-sounding Facebook chat message or wall post asking for an emergency money transfer, you'd want to help, right? Naturally. That's what makes this scam so awful. The point is to get you to wire money to scammers via Western Union or another transfer service.

  • Fake Friend Request

    Not all <a href="http://www.huffingtonpost.com/2011/02/10/facebook-friend-request-spam_n_821584.html?page=1" target="_hplink">friend requests</a> come from real people, despite Facebook's safeguards against bots. Some Facebook accounts exist purely to establish broad connections for spamming or extracting personal data from users, so watch out whose friend requests you accept.

  • Fake Page Spam

    Malicious pages, groups or event invitations aim to trick the user into performing actions that Facebook considers "abusive." For instance, a fake invite might offer a prize if you forward it to all your friends or post spammy content on their walls. Sometimes a scammer will set up fake pages as a front for a clickjacking or phishing scheme.

  • Rogue Apps

    Malicious apps are pretty common on Facebook these days. They can be a cover for phishing, malware, clickjacking or money transfer schemes. Oftentimes, the apps look convincingly real enough for users to click "Allow," as they would do with a normal Facebook app. However, rogue apps use this permission to spread spam through your network of friends. For example, the recent "<a href="http://www.huffingtonpost.com/2011/04/08/facebook-closing-accounts-scam-app_n_846737.html" target="_hplink">Facebook Shutdown</a>" scam spread by claiming that Facebook would delete all inactive accounts except those that confirmed via app installation.

  • The Koobface Worm

    The <a href="http://en.wikipedia.org/wiki/Koobface" target="_hplink">Koobface worm</a> is getting on in years (it first appeared in late 2008) and has been mostly scrubbed from the site, but Facebook still warns users to look out for it. Koobface spreads across social networks like Facebook via posts containing a link that claims to be an Adobe Flash Player update. Really, the link downloads malware that will infect your computer, hijack your Facebook profile and spam all your friends with its malicious download link. This worm affects mostly Windows users.