Does Google take manual action on webspam?

Just to confirm: does Google take manual action on webspam? Does manual action result in a removal or can it also be a demotion? Are there other situations where Google will remove content from its search results? Matt Cutts, Bay Area, California Read our quality guidelines here: support.google.com Have a question? Ask it in our Webmaster Help Forum: groups.google.com Want your question to be answered on a video like this? Follow us on Twitter and look for an announcement when we take new questions: twitter.com More videos: www.youtube.com Webmaster Central Blog: googlewebmastercentral.blogspot.com Webmaster Central: www.google.com