Webmaster Guidelines Change History
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Does any one have the dates of changes to Googles Webmaster Guidelines?
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This might be useful to you http://www.hobo-web.co.uk/webmaster-guidelines/
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To my knowledge there isn't anywhere where changes to the guidelines are documented. You can track many of the changes by referring back to posts in the Webmaster Central blog http://googlewebmastercentral.blogspot.co.uk/ Quite often a blog post will have been as a result of changes to Webmaster guidelines.
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