Sadly, an ever-increasing number of people are relying too heavily on Facebook to keep in touch with friends, collegues etc. The problem lies with the fact that relying on Facebook to organise and contact your friends is such a silly move. Email has the advantage that it's an open standard. Anyone can create an email client. However, Facebook is just one entity. It is not an open communication standard and, as soon as Facebook go the way of the dodo, say goodbye to all your friends because you never took the time to ensure you had an alternative way of contacting them such as email.