The global cost of replacing insect pollination is around $190bn every y
Many adults, once grown up, forget the bedtime stories read to them as children. If they remembered them, they would remember that most of the stories -- like Little Red Riding Hood, or Sleeping Beauty, or Snow White, for instance -- always warned of the stranger. And the stranger almost always brought danger. Not all strangers are bad, but the lesson is that, when faced with something that is unknown, one should always be cautious. This is what many users of social networking sites fail to consider when using these sites: You don't know the person who runs that service; yet you expect him to be as honourable as your best friend.
Any other social networking should be an exercise in common sense and caution. Although everyone has a right to privacy and that right should be protected by the law, one should also protect oneself against lawbreakers. We should not reveal over the Internet anything that we would not be glad to reveal in person. The reality is that -- Facebook privacy issues aside -- data mining occurs all the time. Tracking cookies and browsing histories allow individuals and companies to profile a person based on that person's Internet usage. And even if one's privacy is not invaded by a commercial enterprise or a nosey hacker, in countries where privacy and fundamental liberties are not respected, governments can and have been known to intrude. So, in reality, Facebook is just a totem for all the other dangers out there. The solution: constant vigilance.