The DataPortability workgroup’s strongest voice, Chris Saad, noted among the DataPortability Design Principles that the mission ought to be less “fight the man” and more practical and useful goals. It will be interesting to see if the group’s finalized vision is limited to the import/export use cases, because these surely have the least potential. Otherwise, portability may not really matter to an average user, but the benefits to the user experience surely do, and I think selling DataPortability means selling the huge benefits of an efficient, distributed Web experience.