Can anyone rembember the Nokia Mobile Webserver for symbian? http://research.nokia.com/page/231 This was pretty ahead of its time. It would be nice if you could run your own social network node with your data on your device. Sure, you don't have high availability, but that is a small price to pay. You could do such cool things, like bumping phones together and exchanging public keys with each other for encryption, so only your friends have access to your social network node.