Until quite recently, many different countries had different popular social networks, including Vkontakte (Russia), Orkut (Brazil), Hi5 (Peru) and so on. http:

Until quite recently, many different countries had different popular social networks, including Vkontakte (Russia), Orkut (Brazil), Hi5 (Peru) and so on. http://readwrite.com/2009/06/07/post_2 http://readwrite.com/2009/06/07/post_2 Adoption is driven by network effects, so it depends who got traction first. However, the global trend is obviously towards Facebook. It has the biggest network and ultimately the strongest network effect.