Image... owning your own data and personality profile on the web. You determine where to post it and you determine whom to share it with. Without having to input data over and over again. Based on a standard that sites can adhere to it would be possible. Check out www.dataportability.org where companies like Facebook and Google just joined in. Their mission is to put all existing technologies and initiatives in context to create a reference design for end-to-end Data Portability. To promote that design to the developer, vendor and end-user community. Great initiative that will make our lives much easier.
The only question that remains is: what about security? But not many people on social websites seem to be bothered by that based the latest articles.
