Google Notebook users are being warned to think “privacy option” with some recent breaches, TechCrunch reports.It looks like some people using Google Notebook are bookmarking sensitive personal information, including social security numbers and email passwords. And others are finding that sensitive information via the Google Notebook search tool.A Digg post, Google Notebook Search: Go through people’s notebooks, shows how many have turned example of easy access to personal data — apparently only available to the public once Google Notebook users manually turn of the default privacy option.Regardless, question is: When does Google become responsible for monitoring such user neglect? TechCrunch followed up its post with a note that Google had begun removing private data from Notebook, so this could get interesting and lead to some changes at Google, at least for this product. Technology Industry