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One of the most popular topics from searchers (not SEOs) in Google help groups are about removing content in Google's search results. As you can imagine, Google is not eager to remove content in any case, so they have set up specific rules in which they will remove content.
JohnMu of Google detailed which scenarios Google will remove search results from Google in a Google Webmaster Help thread. You can request removal of content in these following cases:
* The site owner has modified a page so that it no longer contains the information or image that concerns me. * The site owner has removed a page/image or blocked it from being indexed by using robots.txt or meta tags. * You've been unable to work with the site owner, but the information appearing in the search results is one of the following: - Your social security or government ID number - Your bank account or credit card number - Your image of my handwritten signature - Your full name or the name of your business appearing on an adult content site that's spamming Google's search results.
Google has a step by step walk through on removing content from Google. You can start that process over here.
Forum discussion at Google Webmaster Help.
