Facebook is not really that special. 1) Facebook, unlike Google is not a technological advance. It means that copying Facebook is easier. 2) People can also j

Facebook is not really that special. 1) Facebook, unlike Google is not a technological advance. It means that copying Facebook is easier. 2) People can also jump ship en-masse from one social network to another within a few years. Many people migrated from Myspace to Facebook. Its not limited to social networking sites. I was amazed when almost everyone of my friends migrated from Yahoo Messenger to Google Talk within about a month. I had about 30-35 regularly online friends at Yahoo and suddenly almost all of them migrated to Google Talk. This was when GTalk didnt even have emoticons. Of course Yahoo Messenger is still ahead of Google Talk in terms of users but this was just an example to show that even if a previous communication medium has all your friends, that does not mean you are locked in. It may so happen that suddenly everyone just simply without explanation migrate to another platform. This process is not very rational and completely unpredictable. 3) Also consider the fact Facebook does not seem popular in countries like India and China. Within some years these countries will be far bigger in terms of number of users compared to the US.