Sharecash:

Following a months-long spat of constant attacks against 4chan that included spam, malicious links and disgusting child pornography, 4chan founder "Moot" unofficially called for a response against file sharing host Sharecash. 4chan users, infamous for their DDoS attacks against other prominent and powerful targets, took up the call by bringing down Sharecash's server for several hours.

For months, attackers have been crowdsourcing the task of submitting to 4chan comments containing child-pornographic imagery and links to files containing viruses.

The attackers have been profiting on these files by hosting them on Sharecash, which, according to their own site, pays approximately 20-60 cents for each file a user within a "target area" (probably the United States or United Kingdom) downloads from their servers.

Details are sketchy at this point, but it seems that after months of unsuccessful attempts to ban offending IP addresses, implement word filters, and convince Sharecash to close the attackers' accounts, Moot decided to rely on the brute force of the 4chan community to solve this problem.

In a rare thread addressing 4chan users directly late Friday afternoon, Moot wrote, "There are six and a half million of you, and only so many of them. I can't believe we're losing this battle. […]

The real solution is to have Sharecash suspend known spam accounts." Moot posted screenshots of an email exchange apparently between himself and Sharecash, as well emails from the attackers themselves. In them, a Sharecash employee claims no knowledge of spambots deployed on 4chan, and writes that Sharecash is not responsible for its users' actions.