A form of spamming public opinion from political organisations via the media.

Specifically where a media operation of a Campaign or political party distributes a press release to voulunteers who forward it en masse by letter and e-mail to media organisations in an attempt to distort the media organisations perception of public opinion, and distort the media organisations output.
The effort to (get) Astroturf printed appears to have worked in Hattiesburg, Mississippi

In Arizona, xxxxxx got the astroturf accepted as a grassroots effort.
by blobby December 29, 2004