United States: Tropas SS (SS Troops) is a Spanish-language neo-Nazi blog. Based in Spain, the sites sends the group's message globally through discussion groups and an Internet television program.
Palestinian Authority: Saraya al-Quds Hero sisters is a posting from the Al-Qassam English forum, which reports training women in Hamas camps.
Islamic Republic of Iran: This online children's game introduced in 2010, based on the American game "Chutes and Ladders," features Zionists, the British government, President Obama and the BBC as "evil" snakes.
Palestinian Authority: This image of the Taj Mahal Hotel appeared online days after the November 2008 attacks. The flags of Israel and United States are visible before the burning building. The text in the foreground reads: The same way you kill, you will be killed.
Russian Federation: Its name inspired by Norse mythology, this Russian, white-female supremacist group has connections to other white supremacy Web sites.
United States: The Society for the Defeat of Islam is one of the many anti-Muslim groups on Facebook. The page provides a link to the group's blog, "Defeat Islam!" which "chronicle[s]" of the struggle against Islam.
United States: The Nationalist Coalition News is an online broadcast helmed by the white supremacy group the Nationalist Coalition, which was inspired by the teachings of William Pierce. The group posts its broadcast on Youtube and defines it newscast as "A New Kind of 'White Activism'."
Egypt: This anti-Christian Facebook page highlights the hostility between Muslims and Coptic Christians in Egypt. The two groups clashed violently in 2009.
United States: Before John Patrick Bedell shot two Pentagon security guards and was killed himself, he recorded audio files in which he alleged that the government was at risk for a hostile takeover. The threat, according to Bedell, could take control, centralizing military power and devaluing human life.
Russian Federation: Russian folk metal band Temnozor's music has been cited for its anti-Christian and anti-Semitic themes. The Netherlands in January 2010 banned Temnozor for its neo-Nazi bent.
Palestinian Authority: This online training video teaches Hamas fighters to disable vehicles and capture Israeli soldiers.
Canada: Filthy Jewish Terrorists presents itself as a news site and uses realistic headlines to blame Jews for terror attacks around the world, like 9/11 and the attack on Mumbai. The site also suggested that Jews saw the 2010 Vancouver Olympics as a possible target for a terror attack.
Yemen: This Yemeni group, like Al Qaeda, seeks to destroy Western influence in Muslim countries and establish an Islamic caliphate. Al Qaeda in the South Arabian Peninsula publishes an online magazine about Jihad, called "Echo of Glorious Battles."
United States: Stormfront, the Internet's first white supremacist Web site, has expanded to Twitter. Don Black, a former leader of the Ku Klux Klan, uses Stormfront's Twitter account and site to update followers and attract recruits.
Australia: This site lists all of the "evil" people in human history. Apart from expected choices, like Hitler, the list includes U.S. President Franklin Delano Roosevelt, Pope John Paul II and the Catholic Church.
The Simon Wiesenthal Center just released the Digital Terrorism and Hate 2010 report, identifying the Web's most dangerous and offensive content. Here's the Web's worst sites.