Even an online cesspool has limits. Ali Saad now says "I got fucked for" visiting 4chan's notorious /b/ message board, but his talk of going on a shooting spree at his Michigan community college probably better explains his FBI arrest.

First Christopher Poole created 4chan, a fast-churning anonymous imageboard. Now he's testing Canvas, a fast-churning anonymous imageboard. The difference: Canvas is clean, friendly and attracts investors, while 4chan is filthy, anarchic and attracts subpoenas. Let's hope 4chan doesn't feel threatened.

Twenty-year-old Matthew Riskin Bean was sentenced to 45 days in prison after pleading guilty to a single count of stalking. Bean, a 4chan user, had posed as a "concerned mother" and emailed a Philadelphia school pictures of a student's penis.

What's the Internet's scariest hivemind like in real life? A bunch of geeky twenty-somethings hanging out in a bar in Brooklyn. This is what I learned last night at the first official meetup for the notorious message board 4chan.

The FBI has raided a Texas hosting company and seized two hard drives as part of an international criminal investigation into the Anonymous hack attacks against PayPal in retaliation for the company's decision to cut off Wikileaks.

In case you haven't noticed, a pasty fugitive hacker has been at war with the U.S. government for the past few weeks while his minions use the net to attack global corporations. So what's all the fuss about?

By now you've heard about how the shadowy collective Anonymous is launching cyberattacks—"Operation Payback"—against perceived enemies of Wikileaks, including PayPal, Amazon and MasterCard. But you've probably heard wrong. Let us debunk three commonly-held myths about Anonymous.

Operation Payback is facing a little payback of its own. First Twitter closed the pro-Wikileaks hacker movement's account. And now we hear the Feds are shutting down some online discussion of Operation Payback attacks.

Anonymous is taking credit for shutting down Mastercard's web site in retaliation for the credit card network refusing to process donations to Wikileaks. Mastercard says the shutdown isn't affecting transactions, but the BBC is hearing from merchants who say otherwise.

4chan-affiliated hacker group Anonymous has declared war on enemies of secret-sharing site Wikileaks. Internet war! Their first targets: PayPal, which won't facilitate donations to Wikileaks, and PostFinance, the Swiss bank that froze founder Julian Assange's accounts. Update: And Mastercard!

The picture at the center of Miley Cyrus' first nude picture scandal is very likely fake. It first emerged from the depths of the Internet message board 4chan, where horny sleuths created this elaborate diagram to prove its authenticity.

The notorious message board 4chan's young founder has fashioned himself as a champion of extreme free speech on the Internet. But blatant censorship is occurring on 4chan right now, after its users attacked a target too close to home.

At 5pm today the unruly message board 4chan plans to take down the blogging platform Tumblr. 4chan has successfully cowed everyone from Gene Simmons to the Tea Party, but they may have finally met their match.

This week, 4chan's 22-year-old founder, Christopher Poole (AKA "Moot"), held an extensive Q&A with users of the anarchic site's /b/ messageboard. The discussion ranged from technical details, to the rewards of fame, to sex. Lots of sex.

Spend enough time on 4chan's notorious /b/ message board and you'll come across child porn that slipped past overwhelmed moderators. One Navy sailor downloaded some kiddie porn he found on 4chan; now he's the subject of a federal investigation.

Meet Erik. Erik loves Justin Bieber, hates those who don't, and—in a quickly spreading online video—has threatened to ruin the lives of unrepentant non-Beliebers. Unfortunately for Erik, though, 4chan may have already turned the tables on him.

When a video clip of a girl drowning puppies appeared online, 4chan went to work and identified the perpetrator, a girl in Bosnia. The police there tracked her down. And now: she's reportedly getting off without being charged.

It happened in Britain, and now it looks like the porn privacy invasion might reach American shores: U.S. companies are tracking porn downloads from networks like BitTorrent, and experts say they are easy prey for hackers.

Earlier this month, pranksters from 4chan's /b/ board launched an attack on anti-pirating forces like the Motion Picture Association of America. One side-effect: a list of over 5,000 alleged Internet porn pirates was leaked on the Internet.

4chan has attacked Teaparty.org. The results are predictable.