Facebook introduced Graph Search on Tuesday, a new search technology that allows users to search and filter through content that has already been shared by their friends. Graph Search makes finding new things much easier, but you can only see what you could already view elsewhere on Facebook, said Facebook in a press release. Facebook will shortly be asking users to carefully review what they have on the site and what privacy settings they currently have in place. The ability to search for any publicly posted opinion or photo may rub some users the wrong way.”]