The main problem here is with the thoughtlessness with which Facebook handles what should be its central asset - the social networks that its users belong to. Social networks are defined in the first place by the term 'friend', but being friends with someone on the site is no more than a binary decision: you either are, or you're not. There's no opportunity to do what we do in our lives outside of Facebook every day - to distinguish between different types and levels of friendship: work colleagues, old school friends, family members, neighbours, ex-lovers, casual acquaintances must all be classified simply as either 'friend' or 'non-friend'. What's the use of that?