The only way this could take off is if they would offer federation with Facebook. I would have an account on some Diaspora server, you'd have one on Facebook,

The only way this could take off is if they would offer federation with Facebook. I would have an account on some Diaspora server, you'd have one on Facebook, and we could post to each other's walls without restrictions. It would be really easy to hack together an interface. Diaspora would read from Facebook via the API, and post to Facebook via puppet accounts (until they get a proper federation API). Problem is that Facebook will quickly kill the app and delete your account for violating their TOS. What we really, really need is legislation that forces critical social networks (say, > one million users) to offer federation. All the technical ingredients are already there (protocols like open graph, extensions to XMPP, ...), the corporations just have to allow it. People (and lawmakers) have to realize that social networks have become infrastructure, and need to be regulated to ensure openness and competition.