This was forwarded to me:
http://www.infoshop.org/inews/article.php?story=20070114054249892
Quote: "So while demonstrating the use of Google ads to my colleague yesterday, I suggested that we click on the link to the page about this company on the Wikipedia – and that we include our own subversive message there."
Most of the article is more balanced (they actually recommend that Union members sign up, learn about Wikipedia, and the author says he donated to WP and urges others to, too), but there are a few "hey, this can be a propaganda tool!" recommendations in there...