this article mostly seems like a lot of applause lights. The author likes 'open' and wants to believe that 'open' will win. It's won once before, and so the author calls it 'inevitable'. That's not supporting an argument. The universe is still allowed to turn around and say 'so what,' and do something different.
It's inevitable, because those of us who are working on it aren't going to give up, amongst other reasons. Further, the ability to have niche/community/localized, etc. social networking sites that inter-operate is an achilles heel to the one-site-fits-all approach of Facebook. Once a set of social networking sites come out that inter-operate, and people see how it's done, then Facebook, Myspace, etc. will all feel ve…
The ability for federated social networking to take off hinges on user experience. It's not impossible, but Facebook has a huge advantage in crafting a user experience because it doesn't have to worry about the technical pitfalls of a federated system.