Astroturfing

From wikipedia:Astroturfing

http://en.wikipedia.org/wiki/Grassroots

Main article: Astroturfing. Faking a grassroots movement is known as astroturfing, which, as the name suggests, is named after AstroTurf, the iconic brand of artificial grass. Astroturfing means pretending to be a grassroots movement, when in reality the agenda and strategy are controlled by a hidden, non-grassroots organization. In this manner, a faux show is presented, consisting of robotic individuals pretending to be voicing their own opinions.