Bit late answer... I think technically it will be possible to let the user provide and store the data needed to have a personal experience at a website, it sho

Bit late answer... I think technically it will be possible to let the user provide and store the data needed to have a personal experience at a website, it should be not that hard. You should be able to either provide an address to your data or the data itself in the calling phase of a request to the server at hand, if we choose to change the protocols of webserving. However I have a feeling that the whole enterprise world will fight with all power to make it not happen.