Related link: http://tribe.net
They’ve gone one step further and have allowed for exporting to a FOAF file aswell. The data is not a prisoner, and the user can move around freely if they wish to other sites with their data.
What I love about this most of all is that t forces a service to be creative and innovate with the service itself instead of leaning on the crutch of having trapped users with locked in data.
Nice, enlightend move Tribe.net!