11 January 2013 Last updated at 19:50 ET
By Nga Pham BBC News, Hanoi
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Vietnamese propaganda officials have admitted deploying people to engage in online discussions and post comments supporting the Communist Party’s policies.
The party has also confirmed that it operates a network of nearly 1,000 “public opinion shapers”.
They are assigned with the task of spreading the party line.
The tactic is similar to China’s model of internet moderators who aim to control news and manipulate opinion.
Read more: http://www.bbc.co.uk/news/world-asia-20982985