It would be cool if all your personal data was stored in some central repository. You can designate certain chunks of that data as publicly accessible, and you

It would be cool if all your personal data was stored in some central repository. You can designate certain chunks of that data as publicly accessible, and you can grant permission to different sites for reading and writing data to other sections. That way all sites can contribute to one data set, kind of like a personal Wikipedia. Everybody wins. It would have a set of standards that make it easy to request commonly used pieces of information: name, primary-email, avatar, etc. You could even store passwords in it, or more likely just sidestep the need for passwords all together, since it could essentially be a global login. You would never have to fill out forms for registrations, credit card info, etc. For sites that you don't want to give your personal information to, you just give access to a secondary set of data instead, with values for your internet nickname and persona. Of course, there'd be big security challenges, but I think that would be a neat solution to issues with online identity and personal data.