How long does it take before you consider someone a friend, the kind with whom you would share personal information and private details about your life? A day, a week, a month? Would you share details with a friend sight unseen? Sounds ridiculous, doesn’t it? But according to a recent study in Australia by IT security firm Sophos, Facebook users are not only extremely friendly, they are also extremely trusting.

In 2007, Sophos conducted a study in the UK to determine how willing Facebook users were to give out personal information. The result, 43% of UK Facebookers become friends with a complete stranger, a fake Facebook profile setup by Sophos. This year the study was moved to Australia, and given that two years had passed and that much has been made of privacy and the dangers of revealing too much information online, Sophos expected Facebook users to be much more cautious than before. They were wrong.