If you have been paying attention to the news recently you may have come across a news story about Cheryl Smith whose facebook photo was used to advertise a singles dating website without her permission. This highlights one of the main hidden dangers of facebook. Allowing applications to access your profile details.
Lets be honest if you use facebook on a semi-regular basis, the chances are that you use applications, unfortunately to use the vast majority of applications you have to let it access your profile information which can include photographs, and depending on what the terms and conditions of use of the application are, this may include letting it use your photo in adverts on facebook, which was the case for Cheryl Smith.
If there is a moral to the story it is to try to use as few applications as you can, and check the terms & conditions and privacy policy associated with any applications that you do use so that you dont get caught out
