I was using Orkut(here in Brazil) in 2004. Long before Zuckerberg was even thinking about building one, and before the MySpace fever in the US.
About the time Facebook was catching up here in Brazil(about 2009/2010), Orkut had years ahead of social networking history.. they lose to themselves, or to the social class system here, because too many people was using it, and the early adopters, and the "cool people" were abandoning the ship, because it loose the energy, and became too spammy