The BBC's technology programme Click has exposed a security flaw in the social networking site Facebook which could compromise privacy.

BBC NEWS | Technology | BBC exposes Facebook flaw

I've been suspicious myself of the level of access applications, which at the front will appear as a game or quiz, have to personal data. The BBC has proved that a simple application to produce random facts can steal the data not only of the user, but also of their friends if the friends have network level privacy settings. I urge anyone reading this to check the applications they use, and make sure their privacy settings are well looked after. Accepting yet another "pirates vs zombies" invite may have more serious consequences than you think.

Update: You can change Application privacy settings from the Facebook privacy page. I'd recommend you turn most things off, especially where you live, your picture and education/work information as these could very easily be used for identity fraud.