VANK, an acronym for Voluntary Agency Network of Korea (simplified Chinese: 韩国网络外交使节团; traditional Chinese: 韓國網絡外交使節團), is an internet-based South Korean organization consisting of 100,000 Korean members and 30,000 international members.
VANK publishes reading materials, postcards, maps, and videos. VANK's self-built online database and published books with information about Korea are acknowledged by overseas universities as recommended learning resources about Korea. As a way to exchange cultures and connect with foreigners, VANK also conducts surveys about foreigners' opinion of Korea, such as a notable survey about what sides of Korea interest foreigners the most. 
VANK disputes certain terms and information regarding Korea's geographic names or about Korean history. The head of the Voluntary Agency Network of Korea said the organization has corrected hundreds of mistaken statements by foreign governments about South Korea.
VANK is an independent non-governmental and private organisation. According to VANK, they do not receive money from any organisation or corporation, and are run by donations. It receives donation from Ministry of Education, Science and Technology of South Korea  VANK has received monetary support from the South Korean government; however, the amount has been decreased in recent years, from 80 million won in 2006 to 30 million won in 2008.
VANK has been accused of promoting Korea at the expense of Japan. Critics claim that VANK has attempted to discount Japan and Japanese culture, manipulate history during and after World War II and have other countries believe in distorted perspectives related to Japanese-Korean history that have a bias favoring Korea.
An About.com spokesman, relating his company's decision to use the name "East Sea" to refer to the body of water otherwise known as the Sea of Japan, stated that they chose to use the name "not necessarily because it agreed with the South Korean geography activists but because the e-mail bombardment was annoying."  It was reported in the Asia Times Online that they received as many as 20 e-mails per day regarding this issue from VANK.
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