There’s a good reason that ‘telling tales’ is looked down on – and a good reason why it’s generally only been oppressive regimes (both real and fictional) that have encouraged people to report on their neighbours – from the worst of the Roman Emperors such as Tiberius and Caligula to the KGB, the Stasi and so forth. It’s creepy – and it helps build at atmosphere of distrust, breaking down the very things that make social networks good. The social relationships that are the heart of Facebook are meant to do ‘good’ things – not be a route by which bad things are spread.
Taking it a step further, look at the nature of the questionnaire. You’re being asked to report on a ‘friend’. If you say ‘I don’t want to answer’ that will be recorded – that’s the whole nature of Facebook – and it’s not hard to see that there could be a list of ‘people who don’t want to answer about their friends’. Indeed, under the terms of the Snoopers Charter, it wouldn’t just be Facebook who could access this kind of information: the authorities could potentially set up a filter to gather data on people who don’t confirm the names of their friends. It could be viewed as suspicious if you don’t answer – or even suspicious if you are friends with people who don’t answer. Again, this is the nature of Facebook’s social data – and how it could be misused.