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Checking for password duplication in Keychain Access and 1Password - ZDNet (blog)
http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNE9bk90WarElgj0B2HcqTz7hER2NQ&url=http://www.zdnet.com/blog/apple/checking-for-password-duplication-in-keychain-access-and-1password/13074