One of the main reason Facebook is a success is that it contains almost everything that one does when online. For example chatting, sharing picture and videos, playing online games and also have foreign friends even though FB tries to prevent it. Now I nearly have 100 friends on FB whom I have never met in my whole life. And most of all it is FREE. Not every body would pay for being members in online communities. And no teenager who has dominated the FB membership cant pay it, especially with credit cards.
