http://www.ojr.org/japan/internet/1061505583.php

In May 1999, Hiroyuki Nishimura started up a modest discussion board called Ni Chaneru -- Channel 2. The site gave many Japanese an anonymous way to vent their feelings, meet strangers, lurk and connect.
Channel 2 quickly became a quirky place where people sometimes came to post rants before committing crimes and where people contemplating suicide came to meet others feeling the same way -- and to arrange group suicides.
In 2001, Time Asia wrote of the site, "Surfing through Channel 2 is like taking a ride on Japan's wild side. On any given day you can read messages about users' schemes to assault their bosses, murder their teachers or blow up a neighborhood kindergarten."
More than a million people post comments on Channel 2 every day, and the site gets 600 million page views a month. Channel 2 is Japan's biggest and most popular Web site.