1. The document discusses the implications of Facebook becoming the world's dominant social network and telephone book.
2. Facebook currently has over 2 billion monthly active users, more than double its nearest competitor, giving it an immense advantage over rivals.
3. However, Facebook faces challenges in the next year to maintain its dominance globally as it aims to be the primary social network and contact method for more users worldwide. Overcoming issues related to privacy, regulation in different countries, and competition will be key to its continued success.